#trace fossil

[allosuchus]

…… He noted that trackways often show multiple species that lived together at the same time, and can reveal other information. This new trackway also shows that wide, squat ankylosaurs — sometimes described as being coffee-table-like — had a surprisingly bird-like gait, lining up left and right feet like "supermodels on a runway." He added, "This track record shows us the coffee table analogy is a little bit flawed." On the other hand, he acknowledged, there is one drawback of footprints compared to bones. "The obvious question is: What do these animals look like? All we have are the feet."

[echinoid-fossils-on-the-rocks]

Tiny mussel imprints

Sometimes I wonder how many tiny fossils, imprints of mussel or brachiopode we missing around in all the pieces of rocks, or rock matrix.

Meistens hier typisch Feuerstein Flint, brüchige gespaltene Scherben mit kleinen Muschelabrücke, teils mit Schalenmuster, aber keine art Bruch muschelig. Teils kristallisierte.

[dinodorks]

[ Some of the approximately 75 dinosaur tracks discovered at the site. Photo courtesy of Paul Baker / Friends of Dinosaur Valley State Park. ]

"Drought has dried up part of a river in central Texas, revealing 113-million-year-old dinosaur tracks. The prehistoric footprints emerged at Dinosaur Valley State Park, which is located in the town of Glen Rose, southwest of the Dallas-Fort Worth area. As the name suggests, the park already protects other dinosaur footprints. But the tracks that recently emerged are usually hidden under the mud, silt and waters of the Paluxy River. This summer, however, water levels have dipped so low that the prehistoric indentations are now visible. So far, volunteers have counted 75 newly exposed footprints in the parched riverbed. “It has been another very hot, very dry year, so our researchers are trying to take advantage of the drought,” says park superintendent Jeff Davis to the Dallas Morning News’ Sarah Bahari. Two different types of dinosaurs likely made the footprints, according to park officials. One was Acrocanthosaurus, a 15-foot-tall carnivore that weighed approximately 14,000 pounds. As the gargantuan reptile walked around the area on two legs, it left behind the outline of its three-toed feet. The other was Sauroposeidon proteles, which has been the official state dinosaur of Texas since 2009. This long-necked behemoth may have measured up to 100 feet long and weighed closer to 88,000 pounds. It left behind larger, bulbous-shaped tracks that are similar to elephant footprints."

Read more: "Drought Reveals 113-Million-Year-Old Dinosaur Tracks in Texas" by Sarah Kuta.

[bettergeology]

Fossilized camel footprints at a secret location in Death Valley National Park. These are probably somewhere between 10 and 15 million years old.

[drhoz]

#2784 - Ophiomorpha

Another ichnofossil, thought to be a crustacean burrow. They're generally smooth inside, and lumpy outside, where the sediment was packed in tight to support the burrow. They date as far back as the early Permian (298mya).

Unlike Zoophycos, Ophiomorpha is usually found in rocks that form from sand off beachs and in tidal sandflats, although some have been found in turbidite layers where those turbidites were well-oxygenated. We can only presume that the Zoophycos organisms are much more tolerant of low oxygen levels than Ophiomorpha. Other ichnofossils from the same near-shore rocks include Skolithos, Arenicolites, and Diplocraterion. In fact that assemblage of four ichnospecies is called the Skolithos ichnofacies, and is used to infer a shallow-water paleoenvironment.

University of Otago Geology Museum, Dunedin, Aotearoa New Zealand

[04032021]

[aardwolfpack]

What's the name of the dessert that looks like this rock?

That's been bugging me for years.

Pleistocene piddock bore holes

Monterey formation shale from Farm Center, Carmel Valley, CA

To help support the preservation of our collection click here.

[hailthedragonmaster]

hello fossil fighters nation, i present: blank FF1 vivosaur stat pages of varying sizes!

i may get to the attack pages as well, depending on my patience :']

[waidwund]

düsseldorf, germany // 11-2023  

© 2023 waidwund–photo  

[palaeosinensis]

Alright science art and paleo art folks go gentle on me. If I was to do these for a gallery showing I think I'd need at least a couple of weeks for research and notes alone. More if I reached out to researchers for paper access and feedback. Speculative armored invertebrates, Dickinsonia, speculative medusa, Charnia, Spriggina, Kimberella, Arkarua, & their trace fossils.

[dromaeosaurid]

Footprints attributed to ichnotaxon Cheirotherium barthi from A Guide to the Fossil Reptiles and Fishes in the Department of Geology and Paleontology in the British Museum (Natural History), 1896.

[khan-crete]

mutuals meet me in the dry creek bed to look for cool rocks

[echinoid-fossils-on-the-rocks]

Now on the Fossill Hunt

Will posting about the result, if i find new fossils or rocks on the evening.

It´s fucking hot again & dry in my region to, with the now harvesting season of the fields and surroundings.

Dusty areas but i‘m going on the sidewalk and sideways of the tracks not near the vehicles.

Found this flint pebble sponge, with the echinoid. In near half good condition.

Mussel molding in flint, looks like an imprint of the shell and size, no echinodea shell pattern to seen, it has two dendrite crystal strucktures on the sides. Next following pictures.

[dinodorks]

[ Photo by Driss Ourhache. ]

"New research on fossil footprints preserved high in the Atlas Mountains suggests that dinosaurs of all shapes and sizes lived together during the Middle to Late Jurassic around 168 to 160 million years ago. However, skeletal fossils from this period are extremely rare, and are known from just four species including the unusual Spicomellus afer. The discovery of three new tracksites suggests that there could be many more dinosaurs yet to be discovered in Morocco, and North Africa more widely, opening a new window into a time when dinosaurs were at their peak. Ahmed Oussou, a PhD student and the study’s lead author, says, ‘So far, fieldwork undertaken in this region has not yet yielded any bones, making it difficult to link the tracks to any given species of dinosaur.’ ‘While the quantity of tracks in the area does not necessarily mean that the region is rich in body fossils, I hope that further excavations will allow me and my colleagues to find some bones in the coming years.’ The findings of the study, which was co-authored by Natural History Museum researcher Dr Susannah Maidment, were published in the journal Royal Society Open Science."

Read more: "Discovery of Moroccan fossil footprints points to unknown dinosaur diversity" by James Ashworth.

[bwabbitv3s]

Terror Birds Had Raptor Talons And These Fossil Footprints Prove It!

Once the dinosaurs went extinct in the fiery blaze of the KPG impact, their avian cousins and descendants survived and thrived, with many becoming large predatory animals that specialized in holding down and tearing apart reptiles, birds, and mammals alike. One of the most iconic groups of these extinct birds of prey are the terror birds. One important aspect to their biology has just been confirmed thanks to a fossil trackway from Argentina.

[drhoz]

Zoophycos is a trace fossil - that means it wasn't part of an organism but is a distrubance in the sediments caused by the organism. An example would be burrowing tunnels. In this case it is a grazing trace left as the creature ate away organic-rich sediments. The creature would burrow down to find the choicest beds and then spiral outwards eating all the godies as it went. All that is left is the rasping marks in a radiating or spiral pattern. The bed this one is in must have been particularly rich as teher were 4 or 5 of these in a couple of square metres. You can find these fossils all over Guedalest town in the paving stones, which is surprising since they tend to favour more clay-rich marly sediments which don't normally make good paving stones.