Ancient scorpion trapped in amber #FossilFriday scielo.br/j/jvatitd/a/NG…

Ancient fruit fossil, Melia santangensis, from the Santang Lagerstatte in China. These fruits are still alive today and these fossils are the oldest of their kind #SantangWeek #Paleontology …nalofpalaeogeography.springeropen.com/articles/10.11…

This week we're covering the Chinle Fm in SW United States for the first time! This is a late Triassic site preserving a warm and wet world featuring early dinosaurs, petrified wood, and crocodile relatives. #ChinleWeek #Paleontology

#Juniperus L. (#Cupressaceae) from the #Miocene of #Chifeng, #InnerMongolia: the earliest #macrofossil of sect. Sabina in East #Asia doi.org/10.1080/089129…

Puercosuchus traverorum was an ancient predator from the Chinle Formation in southwestern US. The fossil was found during a guided Girl Scout trip hike! #ChinleWeek #Paleontology nps.gov/pefo/learn/new…

The petrified logs are one of the most prominent features of Petrified Forest National Park. Ancient trees were quickly buried in a river, slowing the decay process and allowing crystals to replace the original wood. #ChinleWeek #Paleontology nps.gov/pefo/learn/nat…

An ancient phytosaur, Smilosuchus gregorii. This particular specimen had multiple infections on its bones. Their severity meant the animal died either from infection or nutrient deficiency from lack of hunting. #ChinleWeek #Paleontology palaeo-electronica.org/content/2021/3…

An organism from the Waukesha Biota once thought to be a leech is now recognized as a worm which sheds its skin. The fossil is identified as a molt which accounts for the lack of preserved internal organs. #Paleontology cambridge.org/core/journals/…

Lophionotus sanjuanensis, an ancient semionotiform fish from the Chinle Fm in Utah. Article by Dr. Sarah Z. Gibson #ChinleWeek #Paleontology tandfonline.com/doi/full/10.10…

Coelophysis is probably the most famous dinosaur from the Chinle Formation. It was originally thought to be a cannibal due to its stomach remains (but now thought to be unrelated digested-reptiles) #ChinleWeek #FossilFriday

Revueltosaurus callenderi from the Chinle Formation in Arizona, US. #ChinleWeek #Paleontology anatomypubs.onlinelibrary.wiley.com/doi/full/10.10…

Behavior like locomotion is rarely preserved in the fossil record. However, every now and then, we find stellar tracks of animals walking, running, crawling, and even swimming. This week we'll look at great examples of these trace fossils. #TracksWeek #Paleontology

It may surprise you to learn that we can find swimming trace fossils! Bottom feeding fish, like this Notogoneus from Fossil Butte National Monument, created sinusoidal waves on the mud from the natural flexing of their tails. #TracksWeek #Paleontology

One of the largest arthropods to ever exist, the millipede Arthropleura, left scuttling footprints at various sites across the world such as Scotland. #TracksWeek #Paleontology

Some trilobite babies show features, that have been so far unknown in such early stages, like curled antennae, traces of gut, or spines in strange positions. Others are "hiding" in graptolite colonies. Can you spot them? 3/5

Perfect timing for #TracksWeek, new article came out looking at deep-sea swimming and feeding traces of fish. These are some of the oldest (130 mya) examples of deep-sea fish in the fossil record. #Paleontology pnas.org/doi/full/10.10…

WE ARE LIVE! The paleo park pin Kickstarter is now online! Click the 🔗 in my bio to check it out!!!

New paper alert: A large brush-footed trapdoor spider from the Miocene of Australia. Palaeoart by Alex Boersma academic.oup.com/zoolinnean/adv…

And since fossil biomolecules might not cut it for #FossilFriday... Here is a 50 million-year-old fossil feather from Green River, Wyoming that we analysed as part of the study It is held in the Yale Peabody Museum. Isn't it GORGE?! Scale 1 cm.