A late-surviving phytosaur from the northern Atlantic rift reveals climate constraints on Triassic reptile biogeography by Chase Doran Brownstein

“…Phytosauria consists of superficially crocodylian-like archosaurs that either form the sister to the crown or are the earliest divergence on the crocodylian stem and are present throughout the Triassic, making this clade an excellent test case for examining this biogeographic hypothesis. …”
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Digital dissection of the head of the rock dove (Columba livia) using contrast-enhanced computed tomography by Marc E. H. Jones, David J. Button, Paul M. Barrett, Laura B. Porro

“…Digital dissection permits exceptional visualisation and will be a valuable resource for further investigations into the head anatomy of other bird species, as well as efforts to reconstruct soft tissues in fossil archosaurs.…”
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The braincase of Mesosuchus browni (Reptilia, Archosauromorpha) with information on the inner ear and description of a pneumatic sinus by Gabriela Sobral, Johannes Müller

“…Braincase pneumatization has not yet been a recognized feature of stem-archosaurs, but the potential presence of pneumatic foramina in an array of taxa, recognized here as such for the first time, suggests braincase sinuses could be present in many other archosauromorphs.…”
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The western painted turtle genome, a model for the evolution of extreme physiological adaptations in a slowly evolving lineage by Bradley Shaffer, H, Minx, P, Warren, D, Shedlock, A, Thomson, R, Valenzuela, N, Abramyan, J, Amemiya, C, Badenhorst, D, Biggar, K, Borchert, G, Botka, C, Bowden, R, Braun, E, Bronikowski, A, Bruneau, BG, Buck, LT, Capel, B, Castoe, T, Czerwinski, M, Delehaunty, K, Edwards, S, Fronick, C, Fujita, M, Fulton, L

“…We place the genome into a comparative evolutionary context, and focus on genomic features associated with tooth loss, immune function, longevity, sex differentiation and determination, and the species' physiological capacities to withstand extreme anoxia and tissue freezing.Results: Our phylogenetic analyses confirm that turtles are the sister group to living archosaurs, and demonstrate an extraordinarily slow rate of sequence evolution in the painted turtle. …”

Virtual reconstruction of the endocranial anatomy of the early Jurassic marine crocodylomorph Pelagosaurus typus (Thalattosuchia) by Pierce, S, Williams, M, Benson, R

“…Thalattosuchians were highly specialised aquatic archosaurs of the Jurassic and Early Cretaceous, and represent a peak of aquatic adaptation among crocodylomorphs. …”

Evolution of high tooth replacement rates in sauropod dinosaurs. by Michael D D'Emic, John A Whitlock, Kathlyn M Smith, Daniel C Fisher, Jeffrey A Wilson

“…Early neosauropods are characterized by high tooth replacement rates (despite their large tooth size), and derived titanosaurs and diplodocoids independently evolved the highest known tooth replacement rates among archosaurs.…”
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Comparative genome analyses reveal distinct structure in the saltwater crocodile MHC. by Weerachai Jaratlerdsiri, Janine Deakin, Ricardo M Godinez, Xueyan Shan, Daniel G Peterson, Sylvain Marthey, Eric Lyons, Fiona M McCarthy, Sally R Isberg, Damien P Higgins, Amanda Y Chong, John St John, Travis C Glenn, David A Ray, Jaime Gongora

“…These observations suggest that the structure of the saltwater crocodile MHC, and other crocodilians, can help determine the MHC that was present in the ancestors of archosaurs.…”
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Virtual reconstruction of the endocranial anatomy of the early Jurassic marine crocodylomorph Pelagosaurus typus (Thalattosuchia) by Stephanie E. Pierce, Megan Williams, Roger B.J. Benson

“…Thalattosuchians were highly specialised aquatic archosaurs of the Jurassic and Early Cretaceous, and represent a peak of aquatic adaptation among crocodylomorphs. …”
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The evolution of crocodilian nesting ecology and behavior by Christopher M. Murray, Brian I. Crother, J. Sean Doody

“…Abstract Crocodilians comprise an ancient and successful lineage of archosaurs that repeatedly raises questions on how they survived a mass extinction and remained relatively unchanged for ~100 million years. …”
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Correlation between Hox code and vertebral morphology in the mouse: towards a universal model for Synapsida by Christine Böhmer

“…Quantification of the morphological differentiation in the neck of diverse archosaurs established homologous units of vertebrae (i.e. modules) resulting from Hox gene expression patterns within the cervical vertebral column. …”
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Systematics of putative euparkeriids (Diapsida: Archosauriformes) from the Triassic of China by Roland B. Sookias, Corwin Sullivan, Jun Liu, Richard J. Butler

“…The South African species Euparkeria capensis is of great importance for understanding the early radiation of archosauromorphs (including archosaurs) following the Permo–Triassic mass extinction, as most phylogenetic analyses place it as the sister taxon to crown group Archosauria within the clade Archosauriformes. …”
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Validating osteological correlates for the hepatic piston in the American alligator (Alligator mississippiensis) by Clinton A. Grand Pré, William Thielicke, Raul E. Diaz Jr, Brandon P. Hedrick, Ruth M. Elsey, Emma R. Schachner

“…By functionally correlating specific characters in the axial skeleton to the hepatic piston, these osteological correlates can be applied to fossil taxa to reconstruct the evolution of the hepatic piston in extinct crocodylomorph archosaurs.…”
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Air-filled postcranial bones in theropod dinosaurs: physiological implications and the 'reptile'-bird transition. by Benson, R, Butler, R, Carrano, M, O'Connor, P

“…Unambiguous skeletal correlates of postcranial pneumaticity first appeared in the Late Triassic (approximately 210 million years ago), when they evolved independently in several groups of bird-line archosaurs (ornithodirans). These include the theropod dinosaurs (of which birds are extant representatives), the pterosaurs, and sauropodomorph dinosaurs. …”

A novel form of postcranial skeletal pneumaticity in a sauropod dinosaur: Implications for the paleobiology of Rebbachisauridae by Lucio M. Ibiricu, Matthew C. Lamanna, Rubén D.F. Martínez, Gabriel A. Casal, Ignacio A. Cerda, Gastón Martínez, Leonardo Salgado

“…In dinosaurs and other archosaurs, the presence of foramina connected with internal chambers in axial and appendicular bones is regarded as a robust indicator of postcranial skeletal pneumaticity (PSP). …”
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So Volcanoes Created the Dinosaurs? A Quantitative Characterization of the Early Evolution of Terrestrial Pan-Aves by Max Cardoso Langer, Pedro L. Godoy, Pedro L. Godoy, Pedro L. Godoy

“…These have been hypothesised as drivers of the successful diversification of Pan-Aves, the lineage of archosaurs closer to birds than to crocodiles. We characterize here the diversification and body size evolution of terrestrial pan-avians (excluding pterosaurs) along the Triassic and Early Jurassic, using phylogenetic- and occurrence-based approaches, in an attempt to test the influence of such drivers. …”
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Incremental growth of therizinosaurian dental tissues: implications for dietary transitions in Theropoda by Khai Button, Hailu You, James I. Kirkland, Lindsay Zanno

“…Analysis of incremental growth lines in dentin, observed in thin sections of therizinosaurian teeth, demonstrates that tooth growth rates fall within the range of other archosaurs, conforming to hypothesized physiological limitations on the production of dental tissues. …”
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Systemic distribution of medullary bone in the avian skeleton: ground truthing criteria for the identification of reproductive tissues in extinct Avemetatarsalia by Aurore Canoville, Mary H. Schweitzer, Lindsay E. Zanno

“…Abstract Background Medullary bone (MB) is an estrogen-dependent, sex-specific tissue produced by female birds during lay and inferred to be present in extinct avemetatarsalians (bird-line archosaurs). Although preliminary studies suggest that MB can be deposited within most skeletal elements, these are restricted to commercial layers or hormonally treated male pigeons, which are poor analogues for wild birds. …”
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Constraining Morphologies of Soft Tissues in Extinct Vertebrates Using Multibody Dynamic Simulations: A Case Study on Articular Cartilage of the Sauropod Dreadnoughtus by Kristyn K. Voegele, Matthew F. Bonnan, Sorin Siegler, Christopher R. Langel, Kenneth J. Lacovara, Kenneth J. Lacovara

“…Based on these findings, we predict that Dreadnoughtus, and presumably other extinct archosaurs, had a spherical projection of cartilage on the anterior face of the distal end of the humerus for articulation with the radius. …”
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Paravian Phylogeny and the Dinosaur-Bird Transition: An Overview by Federico L. Agnolin, Federico L. Agnolin, Federico L. Agnolin, Matias J. Motta, Matias J. Motta, Federico Brissón Egli, Federico Brissón Egli, Gastón Lo Coco, Gastón Lo Coco, Fernando E. Novas, Fernando E. Novas

“…Regarding character evolution, we found that: (1) the presence of an ossified sternum goes hand in hand with that of ossified uncinate processes; (2) the presence of foldable forelimbs in basal archosaurs indicates widespread distribution of this trait among reptiles, contradicting previous proposals that forelimb folding driven by propatagial and associated tendons was exclusive to the avian lineage; (3) in basal paravians and avialans (e.g., Archaeopteryx, Anchiornis) the wings are relatively large and wide, with relatively short rectricial feathers, a rounded alar contour, and a convex leading margin. …”
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Forelimb muscle and joint actions in Archosauria: insights from Crocodylus johnstoni (Pseudosuchia) and Mussaurus patagonicus (Sauropodomorpha) by Alejandro Otero, Vivian Allen, Diego Pol, John R. Hutchinson

“…We explicitly evaluate how forelimb joint mobility and muscle actions may have changed with postural and anatomical alterations from basal archosaurs to early sauropodomorphs. We thus evaluate in which ways forelimb posture was correlated with muscle leverage, and how such differences fit into a broader evolutionary context (i.e. transition from sprawling quadrupedalism to erect bipedalism and then shifting to graviportal quadrupedalism). …”
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