Two archosaurs (diapsids) enjoyed the sun while this mammal (synapsid) enjoyed watching them. But hey—we are all tetrapods. #phylogeny #tetrapods #archosaurs
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Hashtag
#Archosaurs
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Video edit featuring two pairs of great Avian Archosaurs! Ospreys and Sandhill Cranes. Prehistoric Planet‘s Hatzegopteryx theme really helps elevate the beauty of these birds. Link below to my instagram.
#ospreys #sandhillcranes #archosaurs #birds #dinosaurs
www.instagram.com/alexandermor...
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When and how did avian-style endothermy evolve? In #dinosaurs, or #archosaurs, or even archosauromorphs? Merging genomics and #geochemistry provides new phylogenetic, temporal, and mechanistic constraints!
Join us tomorrow [#SICB] at 8 am for Megan's ground-breaking new data!
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Fig. 3 Thin sections and tissue maps of volant birds (a–i). Scale bars are as follows: a (50 μm), b (50 μm), c (100 μm), d (250 μm), e (50 μm), f (100 μm), g (200 μm), h (100 μm), and i (100 μm). Images used from Wikimedia Commons and from the San Diego Zoo Wildlife Alliance.
IOB
"This suggests that #ventilatory air sacs and associated diverticula can be present despite the absence of #osteological and #histologic correlates..."
Byrne et al
doi.org/10.1093/iob/...
#archosaurs #birds #avian #science #biology
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Fig. 2 A side-by-side comparison of pneumosteal tissue in the extinct Californian turkey (Meleagris californica) (a) and a gharial (Gavialis gangeticus) (b). Pneumosteal tissue and Sharpey’s fibers are marked by an asterisk (a and b, respectively). Scale bars represent 100 μm (Melagris) and 300 μm (Gavialis). Images used from Wikimedia Commons.
IOB
"Here, we test whether fine anchoring fibers on the endosteal bone of #bird and non- #avian #dinosaur #ertebrae—termed “pneumosteum”—are absent in taxa lacking pneumatic openings..."
by Byrne et al
doi.org/10.1093/iob/...
#archosaurs #biology #science #fossils
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Though large & packing a formidable set of jaws, #erythrosuchids did not retain their position as top predators for too long, declining & being superseded by more upright & cursorial #archosaurs, such as pseudosuchian paracrocodylomorphs, through the Middle #Triassic.
🧵 End.
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(Avian) Dinosaur SFX! Grackle vocalizations slowed down.
#birds #archosaurs #dinosaur
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Sebecus and Boverisuchus side by side. Sizes between these two isn’t too inaccurate either.
Boverisuchus.
Sebecus.
Art by Nix. Love these depictions even if Sebecus is a bit too chubby. #archosaurs #crocodile
#sebecus #sebecosuchian
#boverisuchus #planocraniid
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Amateur size comp but still gets the point across. Also the shoe size is a 13, must’ve downsized for some reason lel.
A simple size comparison between an American Alligator Skull that once belonged to a 10ft+ animal. Along with the huge 1 meter skull of Barinasuchus arveloi, estimated at 5 to 6 meters in length! #crocodilians #sebecosuchian #alligator #sebecidae #barinasuchus #archosaurs
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Smok wawelski
[ #paleoart | #archosaurs | #triassic | #3Dart | #art ]
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New from #JRSocInterface: Automated analysis of bird head motion in unconstrained settings: a foundational study on semicircular canal evolution in #archosaurs. Read more: royalsocietypublishing.org/doi/10.1098/... #biomechanics
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Here's my drawing of Tyrannosaurus rex: the Tyrant lizard king!
#paleoart #dinosaur #dinosaurs #traditionalpaleoart #trex #theropod #theropods #cretaceous #traditionalpaleoart #archosaur #archosaurs #tyrannosaurus #tyrannosaurusrex #art #artwork #drawing #traditionalart
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Something that I don't think is discussed enough in #paleontology circles is just how much parental investment is seen in #hadrosaurs. Cause, like, they're doing quite a lot of work compared to what is typical of all other #archosaurs.
#Dinosaurs #Maiasaura
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New paper by Wu et al. describing a new Late #Triassic crocodylomorph 🐊 from the Dockum Group of Texas 🇺🇸 - Pattisaura gracilis. Known from well preserved skull & partial post-cranial skeleton.
#Paleontology #Archosaurs #Science
www.tandfonline.com/doi/full/10....
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Most of January has consisted of commission work, but I'll share a couple since I kind of forgot about posting entirely for a bit-
#dinosaurs #paleoart #archosaurs #beastsofbermuda #artcommissions #digitalart
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Proterosuchus fergusi and his big dumb stupid bald head
Proterosuchus compared to the sizes of Lystrosaurus and Myosaurus
Proterosuchus and pals
#sciart #proterosuchus #paleoart #paleontology #triassic #katbergformation #earlytriassic #lystrosaurus #myosaurus #reptiles #archosaurs
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Boom! #archosaurs
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New paper from the Bristol #Palaeobiology Research Group on jaw functional morphology & evolution in #crocodiles and their ancestors 🐊
How did ecology & biomechanical trade-offs shape the jaw evolution of crocodile-line #archosaurs?
Read here:
royalsocietypublishing.org/doi/10.1098/...
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Figure 1. Landmark set used in this study, digitized onto the photographs of (a) Protorosaurus speneri (WMsN P 47361), (b) Macrocnemus bassanii (PIMUZ T 4822) and (c) Tanystropheus hydroides (PIMUZ T 2819). Detailed definitions of the eight true landmarks are provided in the electronic supplementary material. Anatomical abbreviations: e, epipophysis; ns, neural spine; poz, postzygapophysis; prz, prezygapophysis. Arrows indicate anterior direction.
Extreme neck elongation evolved despite strong developmental constraints in bizarre #Triassic reptiles—implications for neck modularity in #archosaurs
Adam Rytel, Christine Böhmer, Stephan N. F. Spiekman, Mateusz Tałanda #paleontology #palaeontology 🧪⚒️
royalsocietypublishing.org/doi/10.1098/...
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Final work of “PALEOZOA” in the #permian, featuring #archosaurus #rautiania and #interpresosaurus Watch the full video in about a week!! #paleoart #procreate #ipadpro #digitalart #scienceillustration #paleontology #archosaurs #endpermianmassextinction
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