Fossils reveal dinosaurs of prehistoric Patagonia
[the_ad id="30587"]

First record of theropods — dinosaurs that include birds and their closest non-avian dinosaur relatives

An artist's interpretation of Patagonia during the Late Cretaceous, about 66-78 million years ago. Credit: Mauricio Alvarez and Gabriel Diaz

A study led by scientists at The University...
https://alaska-native-news.com/fossils-reveal-dinosaurs-of-prehistoric-patagonia/66279/
#avian #birds #dinosaurs #patagonia #theropods

Archaeopteryx shared many anatomic characters with #coelurosaurs, a group of #theropods (carnivorous dinosaurs). In fact, only the identification of feathers on the first known specimens indicated that the animal was a #bird. Unlike living birds, however, #Archaeopteryx had well-developed teeth and a long well-developed tail similar to those of smaller dinosaurs, except that it had a row of feathers on each side. The three fingers bore claws and moved independently.

https://youtu.be/eOwk2pVViWw

“Archaeopteryx shared many anatomic characters with #coelurosaurs, a group of #theropods (carnivorous dinosaurs). In fact, only the identification of feathers on the first known specimens indicated that the animal was a bird. Unlike living birds, however, #Archaeopteryx had well-developed teeth and a long well-developed tail similar to those of smaller #dinosaurs, except that it had a row of feathers on each side…”

https://www.britannica.com/animal/Archaeopteryx

https://youtu.be/eOwk2pVViWw

Larus tescotatus, a gull evolved to spot a vegetarian sausage roll from a hundred paces and stare-out the stupid human to ensure it gets some! 🦅

#birds #seagulls #supermarket #dinosaurs #theropods

Me, Richard and @markwitton hanging out with Sara, our new #Allosaurus friend at #Westquay in #Southampton.

#Dinosaurs #Fossils #Theropods #NotSauropods

#NewPaper #Paleontology #Dinosaurs #Theropods #Paleopathology

Adun Samathi, Jakkrapat Weluwanarak, Punyawee Duanyai, Siripat Kaikaew & Suravech Suteethorn (2023)
An unusual metatarsal of theropod dinosaur from the Lower Cretaceous of Thailand: the first detailed study of paleopathology in Megaraptora.
Historical Biology (advance online publication)
doi: https://doi.org/10.1080/08912963.2023.2166833
https://www.tandfonline.com/doi/full/10.1080/08912963.2023.2166833

Putting together a graphic showing pelvis size in giant saurischians, having realised that the biggest sauropod pelves aren't _that_ much bigger than those of big theropods. There're obvious functional reasons behind this (bipedality vs. quadrupedality, cursoriality vs. graviportality etc.) but it's still interesting to see the pelves of gigantic sauropods being matched by much smaller theropods. Some interesting limb power/weight ratios being hinted at here.

#dinosaurs #sauropods #theropods

#deeming #flightlessness #flight #evolution #aves #theropods #diving #spinosaurus #upstroke #archaeopteryx #penguins #plotopterids #hesperornithids #palaeognaths #tinamous #wair #treesdown #groundup #burstflight #gliding #soaring #galliforms #rallids #dodo #acetabulum #dippers #microraptor

But we do have to ask ourselves, exactly how brainy were the saurornithoidids, and other nonavian maniraptors? True that an avian grade telencephalon, appears only in these derived coelurosaurs.

But they were at the low end of modern birds: like palaeognaths and galliforms, rather than anseriforms or neoavians. Not likely to be as smart as the accipitrids.

#fire #tooluse #accipitridae #prehodtoricplanet #theropods #behavior #avianintelligence

#NewPaper #Paleontology #Dinosaurs #Theropods

YU Kaifeng, WU Wenhao, Ivan Bolotsky, ZHANG Xin, SHEN Fengbin and Pascal Godefroit (2022)
The first occurrence of Troodon-morphotype tooth in Jiayin, Heilongjiang, Northeast China
Global Geology (English Edition) 25(3): 133-145
doi: 10.3969/j.issn.1673-9736.2022.03.01
http://sjdz.jlu.edu.cn/Jwk_sjdz_en/EN/abstract/abstract19315.shtml

So which theropods had teeth most similar to ziphodont crocodyliforms? And what disparity exists, among such crocodyliform teeth?

#ziphodont #theropods #crocodyliformes #teeth #comparativeevolution #comparativeanatomy

#varanids #varanines #ecology #disparity #megalania #varanusprisca #osteophagy #theropods #feeding #carnivory

@mike Ha. No worries about that. I'll just have to try to hide my slight disappointment when I click on a CW post only to be met with a long rant about crypto. And where's all the CWs for #theropods eating #sauropods anyway? It's all over the place.

#NewPaper #Paleontology #Dinosaurs #Theropods

Sues, H., Averianov, A., & Britt, B. (2022). A giant dromaeosaurid theropod from the Upper Cretaceous (Turonian) Bissekty Formation of Uzbekistan and the status of Ulughbegsaurus uzbekistanensis. Geological Magazine, 1-6. doi:10.1017/S0016756822000954

#NewPaper #Paleontology #Dinosaurs #Theropods #Paleoecology

David W. E. Hone, T. Alexander Dececchi, Corwin Sullivan, Xu Xing & Hans C. E. Larsson (2022) Generalist diet of Microraptor zhaoianus included mammals, Journal of Vertebrate Paleontology, DOI: 10.1080/02724634.2022.2144337

#NewPaper #Paleontology #Theropods #FossilBirds #FunctionalMorphology

Pittman, M., Bell, P.R., Miller, C.V. et al. Exceptional preservation and foot structure reveal ecological transitions and lifestyles of early theropod flyers. Nat Commun 13, 7684 (2022). https://doi.org/10.1038/s41467-022-35039-1

#NewPaper #Paleontology #Dinosaurs #Theropods #Histology

Bailey M. Weiss, Jennifer Botha & Jonah N. Choiniere (2022) Limb bone histology of theropod dinosaurs from the Early Jurassic of South Africa, Journal of Vertebrate Paleontology, DOI: 10.1080/02724634.2022.2145901

PSA: I should warn you that toots such as this:

https://sauropods.win/@markwitton/109546550703777515

from @markwitton are nothing but theropod propaganda and filthy maniraptoran lies!

#lies #LiesDamnLiesAndTheropods #theropods #dinosaurs #SauropodsStillWin

#NewPaper #Paleontology #Dinosaurs #Theropods #Paleobiogeography

Sarah N. Davis, Sergio Soto-Acuña, Roy A. Fernández, Jared Amudeo, Marcelo A. Leppe, David Rubilar-Rogers, Alexander O. Vargas, Julia A. Clarke. 2022.
New records of Theropoda from a Late Cretaceous (Campanian-Maastrichtian) locality in the Magallanes-Austral Basin, Patagonia, and insights into end Cretaceous theropod diversity,
Journal of South American Earth Sciences:
104163

https://doi.org/10.1016/j.jsames.2022.104163.
(https://www.sciencedirect.com/science/article/pii/S0895981122004497)

#NewPaper #Paleontology #Dinosaurs #Theropods #Paleoecology

Adam Kane, Kevin Healy, Graeme D. Ruxton,
Was Allosaurus really predominantly a scavenger?,
Ecological Modelling 476:
110247

https://doi.org/10.1016/j.ecolmodel.2022.110247
(https://www.sciencedirect.com/science/article/pii/S0304380022003453)