#bashanosaurus

[cypressure]

Dinovember 2: Bashanosaurus primitivus

[adamworks]

Day 13 - Bashanosaurus primitivus described in 2022, a new species of the Stegosaur family, from the middle Jurassic

[saritawolff]

#Archovember Day 21 - Yangchuanosaurus shangyouensis

While the three known species of Allosaurus were stalking across North America and Europe, China had its own top predator: the metriacanthosaurid carnosaur Yangchuanosaurus shangyouensis. Yangchuanosaurus even survived the Jurassic Allosaurus, living from the Middle Jurassic to the Early Cretaceous. Similar to Ceratosaurus, it had a bony ridge on its nose with multiple hornlets and ridges.

Like Allosaurus, Yangchuanosaurus was the apex predator at the time and would have had a similar diet of large dinosaurs like sauropods and ornithischians. They may have been pack hunters, as a single Yangchuanosaurus would have likely not been able to take down a sauropod alone. In the Shaximiao Formation, these would have been Protognathosaurus, Yuzhoulong, Omeisaurus, Datousaurus, Mamenchisaurus, Daanosaurus, and the club-tailed Shunosaurus. Ornithischian prey would have included stegosaurs like Huayangosaurus and Bashanosaurus, and neornithischians like Agilisaurus, Hexinlusaurus, and Xiaosaurus. Other theropods like Chuandongocoelurus, Xuanhanosaurus, Leshansaurus, Gasosaurus, and Kaijiangosaurus would have been both competitors and prey. It would have also lived alongside basal pterosaurs like Angustinaripterus, and pseudosuchians like Sunosuchus and Hsisosuchus. Life in the Suining Formation would have been similar, with the inclusion of the sauropod Qijianglong in the Early Cretaceous.

[a-dinosaur-a-day]

Jakapil vs Bashanosaurus

Factfiles:

Jakapil kaniukura

Artwork by @i-draws-dinosaurs, written by @zygodactylus

Name Meaning: Deep Jawed Shield Bearer 

Time: 99 to 97 million years ago (Cenomanian stage of the Late Cretaceous) 

Location: Candeleros Formation, Neuquen and Mendoza, Argentina 

Jakapil is to nonavian dinosaurs as Annakacygna is to birds. This may seem extreme - what could possibly top the cup zoomy swan of filter feeding death - but Jakapil is a weird little dude. It was a bipedal armored dinosaur, similar to the Early Jurassic basal form Scutellosaurus - except, you’ll note, it lived a hundred million years later. At about 1.5 meters long, it was a small dinosaur, again similar to its relative from so long ago. It had rows of osteoderms on its body, and a predentary - unlike other early thyreophorans. It may have diverged from the main thyreophoran group in the Sinemurian, representing a lost lineage of bipedal armored forms that persisted (presumably in South America). However, its classification is a major debate among researchers - many features of the jaw are more similar to Ceratopsians than to Thyreophorans, indicating it may be an armored variant of an early Ceratopsian (which, would be, to say the least, wild) or a completely new clade of Ornithischian altogether! The large amount of wear on its teeth indicates it chewed its food, rather than sheering or chopping it - something only found in a few Ornithischian groups. It lived in a large desert environment, peppered with oases, and filled with a variety of other animals - fish, frogs, tuatara, snakes, turtles, mammals, and other dinosaurs like Andesaurus, Ekrixinatosaurus, Giganotosaurus, Buitreraptor, Alnashetri, and Bicentenaria. 

Bashanosaurus primitivus

Artwork by @i-draws-dinosaurs, written by @zygodactylus

Name Meaning: Early bashan Reptile 

Time: 168 million years ago (Bathonian stage of the Middle Jurassic) 

Location: Lowermost Shaximiao Formation, Yunyang, Chongqing, China

Bashanosaurus is an interesting new stegosaur that is another specimen from the earliest part of the stegosaur family tree, helping to show even more clearly what the first members of this weird group were like. In fact, it had many features similar to both the early thyreophoran Scelidosaurus as well as features similar to the early stegosaur Chungkingosaurus. It grew to about 2.8 meters long, but the known fossils were probably from a subadult, and as such it may have grown larger - though it was still small compared to later stegosaur species. This also indicates that stegosaurs appeared and diversified very, very quickly, reaching very complex forms within twenty million years. It is the oldest known stegosaur as well, dating to just a million years older than the previous record holder. Living in a large floodplain not unlike other Jurassic environments such as the later Morrison, Bashanosaurus shared its home with the early macronarian Yuzhoulong, as well as wide variety of turtles (the more complex environment, famed for mamenchisaurids and weird theropods, would come later). 

DMM Round One Masterpost

[doorbloggr]

Sunday 18/9/22 - Dinosaur Swords and Shields; Thyreophorans

Sauropelta - Sean Closson (twitter)

Apologies in advance if today's article is a bit more scatterbrained than some of my better blogposts in the past, but I've been procrastinating writing for a bit and need to get something out.

The larger group of Dinosauria is traditionally split into two main groups: The Saurischians (lizard hips) and Ornithischians (bird hips). The Saurischians include the Therapods (most meat eaters) and Sauropods (long necks), and have been the focus of a lot of my dinosaur discussion on this blog. So today, I wanna highlight a group from Ornithischia, the Thyreophorans.

Miragaia - TheDinosaurMann (twitter)

Thyreophora includes most of what the public would think of as "Armoured Dinosaurs", and much of the uniting anatomical traits are adapted for a thick set body, weight bearing limbs, powerful tails, and a general predator deterring lifestyle. The earliest and more primitive members of this group were more slender, and evolved from a bipedal common ancestor, but the most derived members were the heaviest, spikiest, and well armoured dinosaurs of their time.

Scutellosaurus, an early Thyreophoran

Gabriel Ugueto/Serpenillus (twitter)

One anatomical trait common to all Thyreophorans is the extensive covering of Osteoderms, bony skin protrusions that decorate and protect the backs, heads, and tails of many members. In the Ankylosaur division, this is mostly present as rounded studs and lumps all along the back and sides of the animal. In Stegosaurs, they present as spikes and plates along the back and tail of the animal. Before researching this topic, it never occurred to me that these were analogous structures, but it makes sense these features had ancestral roots.

To best demonstrate the diversity of Thyreophorans, I want to highlight three of the most recent discovered species from across the group.

Bashanosaurus

@ ttorrooo (on twitter)

This Stegosaur was recently found in China in 2015 and described in 2022. Its name means "Bashan-lizard" Bashan being an old name for Chongqing, where it was discovered. Current research places Bashanosaurus as a very primitive member of the Stegosaur clade, and it shares many traits common with Scelidosaurus, a Thyreophoran thought to have evolved before Stegosaurs and Ankylosaurs diverged.

In later Stegosaurs, the back spines had evolved into angular plates, thought to be primarily a display structure. But in Bashanosaurus, the back spines are still very spiky, and parts of its body still preserve rows of spikes on the side of the body, which were reduced to just one spike on the shoulder or lost altogether in later species. It still had the tail spikes, and this seems to be an ancestral trait. It represents a visual clue on how Stegosaurs evolved some of their more derived traits.

Stegouros

@adamworks (tumblr)

This dinosaur was a very derived Ankylosaur discovered in Chile in 2018, and described in 2021. It's name means "roofed tail". Ankylosaurs were traditionally split into two groups, Ankylosauridae, many of which had tail clubs, and Nodosauridae, which were often heavier built, and lacked tail clubs. These groups were mostly from northern continents, and Ankylosaurs from Australia and Antarctica were harder to classify.

The description of Stegouros prompted the creation of a new division within Ankylosauria; Parankylosauria, a group of Gondwana dinosaurs that diverged earlier, and Euankylosauria, which included the Nodosaurids and Ankylosaurids. While the Northern Continent Ankylosaurs were larger, and utilised clubs in their tail weaponry, Stegouros and its relatives were smaller, less bulky, and Stegouros had a sword on its tail. This tail was less mobile, the "sword" formed from several fused vertebrae, but it was still very dangerous.

Jakapil

Gabriel Diaz Yantén/ PaleoGDY (on twitter)

Video version linked here

This dinosaur was a basal Thyreophoran discovered in Argentina across the 2010s and described in 2022. Its name means "shield bearer" in the Puelchan language. Jakapil represents a lineage of dinosaurs that split off from the rest of Thyreophora before Stegosaurs and Ankylosaurs even split. But whereas most of the time you'd think "basal" or "primitive" means from an older time, Jakapil was from the Late Cretaceous, after most of the Stegosaur lineage had died out.

Thyreophorans were mostly heavy set animals, so quadrupeal locomotion was the norm, but Jakapil was an obligate biped; its arms were too small to walk on. It's well muscled jaw and unique skull shape has many palaeontologists theorising it was a basal Ceratopsian, but the advanced osteoderm armour/spikes on the neck, shoulders and down the back concluded it was a Thyreophoran. A very unique dinosaur indeed.

Thanks for Reading

Hi, if you haven't read any of my stuff before, thanks for reading this. This is sort of my dive into amateur journalism. This is not a dinosaur blog, but I do talk about dinosaurs a lot, so feel free to check out the links in my Pinned Post.

If you have a suggestion for something dinosaur to talk about, please inbox me, I am starved for creativity and would love the inspiration.

[new-dinosaurs]

Bashanosaurus primitivus Dai et al., 2022 (new genus and species)

(Type specimen of Bashanosaurus primitivus, from Dai et al., 2022)

Meaning of name: Bashanosaurus = Bashan [ancient name for Chongqing] lizard [in Greek]; primitivus = primitive [in Latin]

Age: Middle Jurassic (Bajocian)

Where found: Shaximiao Formation, Chongqing, China

How much is known: Partial skeletons of two individuals (including vertebrae, limb bones, plates, and spikes) and an isolated back vertebra from a third.

Notes: Bashanosaurus was a stegosaur, and along with Isaberrysaura from Argentina, it is one of the oldest stegosaurs known. As might be expected of an early stegosaur, it retained some similarities with older non-stegosaurian armored dinosaurs, such as Scelidosaurus. Bashanosaurus was relatively small for a stegosaur, probably around 2.8 m long. However, it is difficult to assess whether the known specimens represent adult individuals.

Reference: Dai, H., N. Li, S.C.R. Maidment, G. Wei, Y. Zhou, X. Hu, Q. Ma, X. Wang, H. Hu, and G. Peng. 2022. New stegosaurs from the Middle Jurassic Lower Member of the Shaximiao Formation of Chongqing, China. Journal of Vertebrate Paleontology advance online publication. doi: 10.1080/02724634.2021.1995737

[extinctworld-ua]

Bashanosaurus

Bashanosaurus — рід птахотазових динозаврів з клади стегозаврів (Stegosauria), відомий по викопним решткам із середньоюрських відкладень формації Шаксимяо (Shaximiao Formation) у Китаї. Включає в себе єдиний вид – Bashanosaurus primitivus. Може бути найдавнішим відомим науці стегозавром, оскільки рештки іншого претендента на цей статус, Adratiklit з Марокко, мають приблизно такий же вік, або навіть дещо молодші.

Повний текст на сайті "Вимерлий світ":

https://extinctworld.in.ua/bashanosaurus/

[gemboundprism]

you like dinos? name every dino

Aardonyx Abdarainurus Abelisaurus Abrictosaurus Abrosaurus Abydosaurus Acantholipan Acanthopholis Achelousaurus Acheroraptor Achillesaurus Achillobator Acristavus Acrocanthosaurus Acrotholus Adamantisaurus Adasaurus Adelolophus Adeopapposaurus Adratiklit Adynomosaurus Aegyptosaurus Aeolosaurus Aeolosaurus Aepyornithomimus Aerosteon Afromimus Afrovenator Agathaumas Agilisaurus Agrosaurus Agujaceratops Agujaceratops Agustinia Ahshislepelta Ajkaceratops Ajnabia Akainacephalus Alamitornis Alaskacephale Albalophosaurus Albertaceratops Albertadromeus Albertavenator Albertonykus Albertosaurus Albinykus Alcmonavis Alcovasaurus Alectrosaurus Aletopelta Algoasaurus Alioramus Alioramus Allosaurus Allosaurus Allosaurus Almas Alnashetri Altirhinus Altispinax Alvarezsaurus Alxasaurus Amanzia Amargasaurus Amargatitanis Amazonsaurus Ambiortus Ambopteryx Ampelosaurus Amphicoelias Amtocephale Amurosaurus Amygdalodon Anabisetia Analong Anasazisaurus Anchiceratops Anchiornis Anchisaurus Andesaurus Angolatitan Angulomastacator Anhuilong Aniksosaurus Animantarx Ankylosaurus Anodontosaurus Anomalipes Anoplosaurus Anserimimus Antarcticavis Antarctopelta Antarctosaurus Antarctosaurus Antarctosaurus Antarctosaurus Antetonitrus Antrodemus Anzu Aoniraptor Aorun Apatoraptor Apatornis Apatosaurus Apatosaurus Appalachiosaurus Apsaravis Aquilarhinus Aquilops Arackar Aragosaurus Aralosaurus Aratasaurus Archaeoceratops Archaeoceratops Archaeodontosaurus Archaeopteryx Archaeopteryx Archaeorhynchus Archaeornithoides Archaeornithomimus Archaeornithomimus Archaeornithura Arcovenator Arcusaurus Arenysaurus Argentinosaurus Argyrosaurus Aristosuchus Arkansaurus Arkharavia Arrhinoceratops Arrudatitan Asfaltovenator Asiaceratops Asiaceratops Asiahesperornis Asiatosaurus Asiatosaurus Astrophocaudia Asylosaurus Atacamatitan Atlantosaurus Atlantosaurus Atlasaurus Atlascopcosaurus Atrociraptor Atsinganosaurus Aublysodon Aucasaurus Augustynolophus Auroraceratops Aurornis Australodocus Australotitan Australovenator Austrocheirus Austroposeidon Austroraptor Austrosaurus Avaceratops Aviatyrannis Avimimus Avimimus Avisaurus

Baalsaurus Bactrosaurus Bactrosaurus Bagaceratops Bagaraatan Bagualia Bagualosaurus Bahariasaurus Bainoceratops Bainoceratops Bajadasaurus Balaur Bambiraptor Banji Bannykus Baotianmansaurus Baptornis Barapasaurus Barilium Barosaurus Barrosasaurus Barsboldia Baryonyx Bashanosaurus Batyrosaurus Batyrosaurus Baurutitan Bauxitornis Bayannurosaurus Beg Beibeilong Beiguornis Beipiaognathus Beipiaosaurus Beishanlong Bellusaurus Berberosaurus Berthasaura Bicentenaria Bienosaurus Bissektipelta Bistahieversor Blasisaurus Blikanasaurus Bohaiornis Bolong Boluochia Bonapartenykus Bonapartenykus Bonapartesaurus Bonatitan Bonitasaura Borealopelta Borealosaurus Boreonykus Borogovia Bothriospondylus Brachiosaurus Brachyceratops Brachylophosaurus Brachytrachelopan Bradycneme Brasilotitan Bravasaurus Bravoceratops Breviceratops Brighstoneus Brodavis Brodavis Brodavis Brodavis Brohisaurus Brontomerus Brontosaurus Buitreraptor Burianosaurus Buriolestes Byronosaurus

Caenagnathasia Caenagnathus Caihong Calamosaurus Callovosaurus Camarasaurus Camarasaurus Camarasaurus Camarasaurus Camarillasaurus Camelotia Camposaurus Camptodontornis Camptosaurus Campylodoniscus Canadaga Canardia Carcharodontosaurus Carcharodontosaurus Cardiodon Carnotaurus Caseosaurus Cathartesaura Caudipteryx Caudipteryx Cedarosaurus Cedarpelta Cedrorestes Centrosaurus Ceramornis Cerasinops Ceratonykus Ceratops Ceratosaurus Ceratosaurus Ceratosaurus Ceratosuchops Cerebavis Cetiosauriscus Cetiosaurus Changchengornis Changchunsaurus Changmiania Changyuraptor Changzuiornis Chaoyangia Chaoyangsaurus Charonosaurus Chasmosaurus Chasmosaurus Chasmosaurus Chebsaurus Chenanisaurus Chialingosaurus Chiappeavis Chiayusaurus Chiayusaurus Chilantaisaurus Chilesaurus Chindesaurus Chingkankousaurus Chinshakiangosaurus Chirostenotes Choconsaurus Chondrosteosaurus Chongmingia Choyrodon Chromogisaurus Chuandongocoelurus Chuanjiesaurus Chuanqilong Chubutisaurus Chungkingosaurus Chupkaornis Chuxiongosaurus Cimolopteryx Cimolopteryx Citipati Citipes Claosaurus Coahuilaceratops Coelophysis Coelurus Colepiocephale Coloradisaurus Comahuesaurus Compsognathus Compsosuchus Concavenator Conchoraptor Concornis Condorraptor Confuciusornis Confuciusornis Confuciusornis Confuciusornis Convolosaurus Coronosaurus Corythoraptor Corythosaurus Corythosaurus Craspedodon Craterosaurus Cretaaviculus Crichtonpelta Crichtonsaurus Cristatusaurus Crittendenceratops Cruxicheiros Cryolophosaurus Cumnoria

Dacentrurus Daemonosaurus Dakotadon Dakotaraptor Dalianraptor Daliansaurus Dandakosaurus Daspletosaurus Daspletosaurus Datanglong Datonglong Datousaurus Daurlong Daxiatitan Deinocheirus Deinodon Deinonychus Deltadromeus Demandasaurus Denversaurus Diabloceratops Diamantinasaurus Dicraeosaurus Dilong Dilophosaurus Diluvicursor Dineobellator Dinheirosaurus Diplodocus Diplodocus Diplodocus Dongbeititan Dongyangopelta Dongyangosaurus Draconyx Dracoraptor Dracovenator Dreadnoughtus Dromaeosauroides Dromaeosaurus Dromiceiomimus Drusilasaura Dryosaurus Dryptosaurus Dubreuillosaurus Duriatitan Duriavenator Dynamoterror Dyoplosaurus Dysalotosaurus Dysganus Dysganus Dysganus Dysganus Dyslocosaurus Dzharaonyx Dzharatitanis

Echinodon Edmontonia Edmontonia Edmontosaurus Edmontosaurus Efraasia Einiosaurus Ekrixinatosaurus Elaltitan Elaphrosaurus Elmisaurus Elopteryx Elrhazosaurus Emausaurus Enaliornis Enaliornis Enaliornis Enantiophoenix Enigmosaurus Eoabelisaurus Eocarcharia Eoconfuciusornis Eocursor Eodromaeus Eogranivora Eolambia Eomamenchisaurus Eoraptor Eosinopteryx Eotrachodon Eotriceratops Eotyrannus Eousdryosaurus Epachthosaurus Epanterias Epichirostenotes Epidexipteryx Equijubus Erectopus Erketu Erliansaurus Erlikosaurus Erythrovenator Eshanosaurus Eucamerotus Eucercosaurus Eucnemesaurus Eucnemesaurus Euhelopus Euoplocephalus Europasaurus Europatitan Europelta Euskelosaurus Eustreptospondylus Evgenavis Evgenavis

Falcarius Falcatakely Ferganasaurus Ferrisaurus Foraminacephale Fosterovenator Fostoria Fruitadens Fukuipteryx Fukuiraptor Fukuisaurus Fukuititan Fukuivenator Fulgurotherium Fumicollis Fushanosaurus Fusuisaurus Futalognkosaurus Fylax

Galeamopus Galeamopus Galleonosaurus Gallimimus Gallornis Galvesaurus Gannansaurus Gansus Gansus Ganzhousaurus Gargantuavis Gargoyleosaurus Garrigatitan Garudimimus Gasosaurus Gasparinisaura Gastonia Gastonia Geminiraptor Genusaurus Genyodectes Geranosaurus Gettyia Gideonmantellia Giganotosaurus Gigantoraptor Gigantspinosaurus Gilmoreosaurus Gilmoreosaurus Gilmoreosaurus Gilmoreosaurus Giraffatitan Glacialisaurus Glishades Glyptodontopelta Gnathovorax Gobihadros Gobioolithus Gobioolithus Gobipteryx Gobiraptor Gobisaurus Gobititan Gobivenator Gojirasaurus Gondwanatitan Gongpoquansaurus Gongxianosaurus Gorgosaurus Goyocephale Graciliceratops Graciliraptor Gravitholus Gryphoceratops Gryposaurus Gryposaurus Gryposaurus Gryposaurus Guaibasaurus Gualicho Guanlong Guemesia

Hadrosaurus Haestasaurus Hagryphus Halimornis Halszkaraptor Hamititan Hanssuesia Haplocanthosaurus Haplocanthosaurus Haplocheirus Harpymimus Haya Heptasteornis Herrerasaurus Hesperonychus Hesperornis Hesperornis Hesperornis Hesperornis Hesperornis Hesperornis Hesperornis Hesperornis Hesperornis Hesperornis Hesperornis Hesperornithoides Hesperosaurus Heterodontosaurus Hexing Hexinlusaurus Heyuannia Hippodraco Histriasaurus Hollanda Homalocephale Hongshanornis Hoplitosaurus Horshamosaurus Hortalotarsus Huabeisaurus Hualianceratops Huallasaurus Huanansaurus Huanghetitan Huangshanlong Huaxiagnathus Huayangosaurus Hudiesaurus Huehuecanauhtlus Huinculsaurus Hulsanpes Hungarosaurus Hylaeosaurus Hypacrosaurus Hypacrosaurus Hypselosaurus Hypselospinus Hypsilophodon

Iaceornis Iberospinus Ibirania Ichthyornis Ichthyovenator Ignavusaurus Iguanacolossus Iguanodon Iguanodon Iguanodon Ilokelesia Imperobator Incisivosaurus Indosaurus Indosuchus Ingentia Intiornis Invictarx Irisosaurus Irritator Isaberrysaura Isanosaurus Isasicursor Ischioceratops Isisaurus Issi Itapeuasaurus Itemirus Iuticosaurus Iyuku

Jainosaurus Jakapil Jaklapallisaurus Janenschia Jaxartosaurus Jeholornis Jeholornis Jeholornis Jeholosaurus Jeyawati Jianchangornis Jianchangosaurus Jiangjunosaurus Jiangshanosaurus Jiangxisaurus Jianianhualong Jibeinia Jinbeisaurus Jinfengopteryx Jingshanosaurus Jinguofortis Jintasaurus Jinyunpelta Jinzhousaurus Jiuquanornis Jiutaisaurus Jixiangornis Jobaria Judiceratops Judinornis Juratyrant Juravenator

Kaatedocus Kaijiangosaurus Kaijutitan Kakuru Kamuysaurus Kangnasaurus Kansaignathus Kaririavis Karongasaurus Katepensaurus Kayentavenator Kazaklambia Kelmayisaurus Kelumapusaura Kentrosaurus Kerberosaurus Khaan Khinganornis Kholumolumo Khulsanurus Kileskus Kinnareemimus Klamelisaurus Kol Kompsornis Kookne Koparion Koreaceratops Koreanosaurus Koshisaurus Kosmoceratops Kotasaurus Kritosaurus Kryptops Kulceratops Kulindadromeus Kunbarrasaurus Kundurosaurus Kuru Kurupi Kuszholia

Labocania Laevisuchus Laiyangosaurus Lajasvenator Lamarqueavis Lamarqueavis Lamarqueavis Lambeosaurus Lambeosaurus Lambeosaurus Lanzhousaurus Lapampasaurus Laplatasaurus Lapparentosaurus Laquintasaura Latenivenatrix Latirhinus Latirhinus Lavocatisaurus Leaellynasaura Ledumahadi Leinkupal Leonerasaurus Lepidus Leptoceratops Leptorhynchos Leshansaurus Lesothosaurus Lessemsaurus Levnesovia Lexovisaurus Leyesaurus Liaoceratops Liaoningosaurus Liaoningotitan Liaoningvenator Ligabueino Ligabuesaurus Liliensternus Limaysaurus Limenavis Limusaurus Lingwulong Lingyuanosaurus Linhenykus Linheraptor Linhevenator Lirainosaurus Liubangosaurus Llukalkan Lohuecotitan Longicrusavis Longipteryx Longirostravis Longusunguis Lophorhothon Lophostropheus Loricatosaurus Losillasaurus Lourinhasaurus Luanchuanraptor Lucianovenator Lufengosaurus Lufengosaurus Luoyanggia Lurdusaurus Lusotitan Lusovenator Lycorhinus Lythronax

Maaqwi Machairasaurus Machairoceratops Macrocollum Macrogryphosaurus Macrurosaurus Macrurosaurus Magnamanus Magnapaulia Magnosaurus Magyarosaurus Magyarosaurus Mahakala Mahuidacursor Maiasaura Maip Majungasaurus Malarguesaurus Malawisaurus Maleevus Mamenchisaurus Mamenchisaurus Mamenchisaurus Mamenchisaurus Mamenchisaurus Mamenchisaurus Manidens Mantellisaurus Mapusaurus Maraapunisaurus Marmarospondylus Marshosaurus Martharaptor Masiakasaurus Massospondylus Massospondylus Matheronodon Maxakalisaurus Mbiresaurus Medusaceratops Megalosaurus Megapnosaurus Megapnosaurus Megaraptor Mei Melanorosaurus Mendozasaurus Menefeeceratops Mengciusornis Menucocelsior Meraxes Mercuriceratops Meroktenos Metriacanthosaurus Microceratus Microceratus Micropachycephalosaurus Microraptor Microraptor Microraptor Microvenator Mierasaurus Minmi Minotaurasaurus Miragaia Mirarce Mirischia Mnyamawamtuka Moabosaurus Mochlodon Mochlodon Mongolostegus Monkonosaurus Monolophosaurus Mononykus Montanoceratops Morelladon Moros Morrosaurus Mosaiceratops Murusraptor Mussaurus Muttaburrasaurus Muyelensaurus Mymoorapelta Mystiornis

Naashoibitosaurus Nambalia Nankangia Nanningosaurus Nanosaurus Nanshiungosaurus Nanuqsaurus Nanyangosaurus Narambuenatitan Narindasaurus Nasutoceratops Natovenator Navajoceratops Nebulasaurus Nedcolbertia Nedoceratops Neimongosaurus Nemegtomaia Nemegtonykus Neogaeornis Neosodon Neovenator Neuquenornis Neuquenraptor Ngwevu Nhandumirim Niebla Nigersaurus Ningyuansaurus Ninjatitan Niobrarasaurus Nipponosaurus Noasaurus Nodocephalosaurus Nodosaurus Nomingia Nopcsaspondylus Normanniasaurus Notatesseraeraptor Nothronychus Notoceratops Notocolossus Notohypsilophodon Nqwebasaurus Nullotitan Nuthetes

Oceanotitan Ohmdenosaurus Ojoceratops Ojoraptorsaurus Oksoko Olorotitan Omeisaurus Omeisaurus Omeisaurus Omeisaurus Omeisaurus Omeisaurus Omeisaurus Omeisaurus Omnivoropteryx Ondogurvel Oohkotokia Oplosaurus Orkoraptor Ornatops Ornitholestes Ornithomimus Ornithomimus Ornithomimus Ornithopsis Orodromeus Orthomerus Oryctodromeus Osmakasaurus Ostafrikasaurus Ostromia Ouranosaurus Overoraptor Overosaurus Oviraptor Owenodon Oxalaia Ozraptor

Pachycephalosaurus Pachyrhinosaurus Pachyrhinosaurus Pachyrhinosaurus Padillasaurus Palaeopteryx Palintropus Paludititan Pampadromaeus Pamparaptor Panamericansaurus Pandoravenator Panguraptor Panoplosaurus Panphagia Pantydraco Papiliovenator Parabohaiornis Parahesperornis Parahesperornis Parahongshanornis Paralitherizinosaurus Paranthodon Parapengornis Pararhabdodon Parasaurolophus Parasaurolophus Parasaurolophus Paraxenisaurus Pareisactus Parksosaurus Paronychodon Paronychodon Parvicursor Pasquiaornis Pasquiaornis Patagonykus Patagonykus Patagopteryx Patagosaurus Patagotitan Pawpawsaurus Pectinodon Pedopenna Pegomastax Pelecanimimus Pellegrinisaurus Peloroplites Pelorosaurus Pendraig Penelopognathus Pengornis Pentaceratops Perijasaurus Petrobrasaurus Phaedrolosaurus Philovenator Phuwiangosaurus Phuwiangvenator Phyllodon Piatnitzkysaurus Pilmatueia Pinacosaurus Pinacosaurus Piscivoravis Pitekunsaurus Piveteausaurus Planicoxa Plateosaurus Plateosaurus Plateosaurus Platypelta Plesiohadros Pneumatoraptor Poekilopleuron Polacanthus Polarornis Polyodontosaurus Polyonax Potamornis Powellvenator Pradhania Prenocephale Prenoceratops Priconodon Proa Probactrosaurus Probrachylophosaurus Proceratosaurus Procompsognathus Proornis Propanoplosaurus Prosaurolophus Protarchaeopteryx Protoceratops Protoceratops Protognathosaurus Protohadros Psittacosaurus Psittacosaurus Psittacosaurus Psittacosaurus Psittacosaurus Psittacosaurus Psittacosaurus Psittacosaurus Psittacosaurus Psittacosaurus Psittacosaurus Psittacosaurus Pterospondylus Puertasaurus Pukyongosaurus Pulanesaura Punatitan Pycnonemosaurus Pyroraptor

Qantassaurus Qianzhousaurus Qiaowanlong Qijianglong Qinlingosaurus Qiupalong Qiupanykus Quetecsaurus Quilmesaurus

Rahiolisaurus Rahonavis Rajasaurus Rapator Rapaxavis Rapetosaurus Raptorex Ratchasimasaurus Rativates Rayososaurus Rebbachisaurus Regaliceratops Regnosaurus Rhabdodon Rhabdodon Rhadinosaurus Rhinorex Rhoetosaurus Rhomaleopakhus Riabininohadros Rinchenia Rinconsaurus Riojasaurus Riparovenator Rugocaudia Rugops Rukwatitan Ruyangosaurus

Sahaliyania Saichania Saltriovenator Sanjuansaurus Sanpasaurus Santanaraptor Sanxiasaurus Sapeornis Sarahsaurus Sarcosaurus Sarmientosaurus Saturnalia Saurolophus Saurolophus Sauroniops Sauropelta Saurophaganax Sauroplites Sauroposeidon Saurornithoides Saurornitholestes Saurornitholestes Savannasaurus Scansoriopteryx Scelidosaurus Schizooura Schleitheimia Scipionyx Sciurumimus Scolosaurus Scolosaurus Scutellosaurus Secernosaurus Sefapanosaurus Segisaurus Segnosaurus Seitaad Sektensaurus Serendipaceratops Serikornis Shamosaurus Shanag Shantungosaurus Shanweiniao Shanxia Shanyangosaurus Shaochilong Shengjingornis Shenqiornis Shenzhousaurus Shidaisaurus Shingopana Shishugounykus Shixinggia Shri Shuangbaisaurus Shuangmiaosaurus Shunosaurus Shuvuuia Siamodon Siamosaurus Siamotyrannus Siamraptor Siats Sibirotitan Sierraceratops Sigilmassasaurus Silvisaurus Similicaudipteryx Sinocalliopteryx Sinocephale Sinoceratops Sinornithoides Sinornithomimus Sinornithosaurus Sinornithosaurus Sinosauropteryx Sinosaurus Sinosaurus Sinotyrannus Sinovenator Sinraptor Sinraptor Sinusonasus Sirindhorna Skorpiovenator Smitanosaurus Songlingornis Sonidosaurus Sonorasaurus Soriatitan Soroavisaurus Spectrovenator Sphaerotholus Sphaerotholus Sphaerotholus Spiclypeus Spinophorosaurus Spinops Spinosaurus Spinostropheus Staurikosaurus Stegoceras Stegoceras Stegopelta Stegosaurus Stegosaurus Stegosaurus Stegouros Stellasaurus Stenonychosaurus Stenopelix Stokesosaurus Streptospondylus Struthiomimus Struthiosaurus Struthiosaurus Struthiosaurus Styracosaurus Styracosaurus Suchomimus Suchosaurus Suchosaurus Sulcavis Supersaurus Suskityrannus Suuwassea Suzhousaurus Syngonosaurus Szechuanosaurus

Tachiraptor Talarurus Talenkauen Talos Tamarro Tambatitanis Tangvayosaurus Tanius Tanius Tanycolagreus Taohelong Tapuiasaurus Tarbosaurus Tarchia Tarchia Tarchia Tastavinsaurus Tatankacephalus Tataouinea Tatisaurus Taurovenator Tawa Tazoudasaurus Tehuelchesaurus Telmatosaurus Tendaguria Tengrisaurus Tenontosaurus Tenontosaurus Teratophoneus Terminocavus Tethyshadros Texacephale Texasetes Thanatotheristes Thanos Thecocoelurus Thecodontosaurus Theiophytalia Therizinosaurus Thescelosaurus Tianyulong Tianyuornis Tianyuraptor Tianzhenosaurus Tienshanosaurus Timimus Timurlengia Tingmiatornis Titanoceratops Titanosaurus Titanosaurus Tlatolophus Tochisaurus Tonganosaurus Tongtianlong Tornieria Torosaurus Torosaurus Torvosaurus Torvosaurus Torvosaurus Tototlmimus Tralkasaurus Transylvanosaurus Tratayenia Traukutitan Triceratops Triceratops Trierarchuncus Trigonosaurus Trinisaura Triunfosaurus Troodon Tsaagan Tsagantegia Tsintaosaurus Tuebingosaurus Tugulusaurus Tuojiangosaurus Turanoceratops Turiasaurus Tylocephale Tyrannosaurus Tyrannotitan

Uberabatitan Ubirajara Udanoceratops Ultrasaurus Ulughbegsaurus Unaysaurus Unenlagia Unenlagia Unescoceratops Unquillosaurus Urbacodon Utahceratops Utahraptor Uteodon

Vahiny Valdoraptor Valdosaurus Vallibonavenatrix Variraptor Vayuraptor Vectaerovenator Vectiraptor Vegavis Velafrons Velocipes Velociraptor Velociraptor Velocisaurus Venenosaurus Vescornis Vespersaurus Veterupristisaurus Viavenator Vitakridrinda Volgatitan Volkheimeria Vorona Vouivria Vulcanodon

Wakinosaurus Walgettosuchus Wamweracaudia Wannanosaurus Weewarrasaurus Wellnhoferia Wendiceratops Wiehenvenator Wintonotitan Wuerhosaurus Wuerhosaurus Wulagasaurus Wulatelong Wulong

Xenoceratops Xenoposeidon Xenotarsosaurus Xianshanosaurus Xiaosaurus Xiaotingia Xingtianosaurus Xingxiulong Xinjiangovenator Xinjiangtitan Xiongguanlong Xixianykus Xixiasaurus Xiyunykus Xuanhanosaurus Xuanhuaceratops Xunmenglong Xuwulong

Yamaceratops Yamatosaurus Yandangornis Yangavis Yangchuanosaurus Yangchuanosaurus Yanornis Yanornis Yaverlandia Yehuecauhceratops Yi Yimenosaurus Yingshanosaurus Yinlong Yixianornis Yixianosaurus Yizhousaurus Yongjinglong Ypupiara Yuanchuavis Yuanmousaurus Yueosaurus Yulong Yunganglong Yunmenglong Yunnanosaurus Yunnanosaurus Yunnanosaurus Yunyangosaurus Yurgovuchia Yutyrannus Yuxisaurus

Zalmoxes Zalmoxes Zanabazar Zapalasaurus Zaraapelta Zby Zephyrosaurus Zhanghenglong Zhenyuanlong Zhongjianornis Zhongjianosaurus Zhongornis Zhongyuansaurus Zhouornis Zhuchengceratops Zhuchengtyrannus Ziapelta Zigongosaurus Zizhongosaurus Zuniceratops Zuolong Zuoyunlong Zupaysaurus Zuul

[teeneesanook]

Fearsome New Species of Stegosaur May Be the Oldest Ever Discovered in the World

Fearsome New Species of Stegosaur May Be the Oldest Ever Discovered in the World

Bashanosaurus primitivus – the newest and oldest species of stegosaur in Asia. Credit: Banana Art Studio Bashanosaurus primitivus roamed the earth around 168 million years ago during the Middle[{” attribute=””>Jurassic period, suggesting that stegosaurs may have originated in Asia. Relatively small, but fearsome-looking stegosaur measured about 2.8 meters (9 feet) from nose to tail—but…

[gaetaniu]

Una nuova specie di stegosauro è la più antica scoperta in Asia, e forse nel mondo

Una nuova specie di stegosauro è la più antica scoperta in Asia, e forse nel mondo

Bashanosaurus primitivus – la specie di stegosauro appena scoperta e la più antica dell’Asia. Una nuova specie di uno dei più riconoscibili tipi di dinosauro è il più antico stegosauro mai trovato in Asia, e uno dei più antichi dissotterrati in tutto il mondo, secondo una ricerca pubblicata oggi nel Journal of Vertebrate Paleontology. I resti dello stegosauro, che includevano ossa della…

[a-dinosaur-a-day]

ITS TIME

FOR

DINOSAUR MARCH MADNESS 2k23!!!!!!!!!!!!

Starting NEXT WEEK, we begin the ultimate competition:

DMM: RISING STARS

These are ALL dinosaurs that have been discovered in the past five years!!! New friends from old times!!! Including such new fan favorites as Bajadasaurus, Jakapil, Meraxes, and Anachronornis - and that's only four of them!

From the weird to the wonderful, these dinosaurs are here to indicate that just because they were found recently, doesn't mean that they aren't destined to become icons like the names we already know and love. Get ready to learn about some new paleontological excitement - and debate angrily over which ones are better ;)

Round One will go from March 1st through the 7th

Round Two will extend from March 8th through the 14th

Round Three will then go from the 15th to the 21st

Round Four from the 22nd to the 28th

And the FINAL FOUR SHOWDOWN (Ornithischian Vs Sauropodomorph vs Nonavian theropod vs Bird) will occur from March 29th through April 4th!

Thanks to the new tumblr poll feature, reconstructions and mini factfiles for each dinosaur will be on the post with the poll itself! No need to leave tumblr, no personal research, no google quizzes - just rapid learning and immediate voting!

Get ready to vote! Get ready to debate! Get ready... for DINOSAUR MARCH MADNESS!

Round One Matchups under the readmore :)

SAUROPODOMORPHA (and miscellany)

Gnathovorax vs Mbiresaurus Bagualosaurus vs Issi

Ngwevu vs Kholumolumo Bagualia vs Amanzia

Lingwulong vs Bajadasaurus Lavocatisaurus vs Ruixinia

Abditosaurus vs Ibirania Australotitan vs Mansourasaurus

ORNITHISCHIA

Sanxiasaurus vs Changmiania Iyuku vs Sinocephale

Bisticeratops vs Crittendenceratops Kelumapusaura vs Gobihadros

Ajnabia vs Tlatolophus Jakapil vs Bashanosaurus

Stegouros vs Patagopelta Spicomellus vs Jinyunpelta

NONAVIAN THEROPODA

Berthasaura vs Vespersaurus Spectrovenator vs Riparovenator

Asfaltovenator vs Meraxes Suskityrannus vs Maip

Daurlong vs Natovenator Bannykus vs Ambopteryx

Caihong vs Hesperornithoides Falcatakely vs Janavis

NEORNITHES (BIRDS)

Vorombe vs Prodontopteryx Asteriornis vs Panraogallus

Anachronornis vs Conflicto Annakacygna vs Nasidytes

Aviraptor vs Cryptogyps Miosurnia vs Primoptynx

Danielsraptor vs Heracles Eofringillirostrum vs Heliothraupis

[teeneesanook]

Early stegosaur fossils may shed light on stegosaurus evolution | Dinosaurs

Early stegosaur fossils may shed light on stegosaurus evolution | Dinosaurs

A dinosaur that sported spine-like plates along its back is one of the earliest stegosaurs yet to be discovered, fossil hunters have revealed, and they say the find could shed light on the evolution of some of the most famous dinosaurs to roam Earth. The stegosaur, which has been named Bashanosaurus primitivus in a nod to the ancient name of the region in China in which it was found in 2016 and…