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A comparative study of eggshells of Gekkota with morphological, chemical compositional and crystallographic approaches and its evolutionary implications.
Published 2018-01-01“…Finally, gekkotan and archosaur rigid eggshells represent a typical example of convergent evolution in the lineage of the Sauropsida.…”
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42
A new archosauriform (Reptilia: Diapsida) from the Manda beds (Middle Triassic) of southwestern Tanzania.
Published 2013-01-01“…The Manda archosaur assemblage is exceptionally diverse for the Middle Triassic. …”
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43
An enigmatic new archosauriform from the Carnian– Norian, Upper Triassic, Ischigualasto Formation of northwestern Argentina
Published 2021-09-01“…In this contribution we introduce a new Late Triassic archosaur, Incertovenator longicollum gen. et sp. nov., with an unusual combination of character states that are present in certain early avemetatarsalian and pseudosuchian archosaur clades. …”
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44
Eggshell Porosity Provides Insight on Evolution of Nesting in Dinosaurs.
Published 2015-01-01“…Knowledge about the types of nests built by dinosaurs can provide insight into the evolution of nesting and reproductive behaviors among archosaurs. However, the low preservation potential of their nesting materials and nesting structures means that most information can only be gleaned indirectly through comparison with extant archosaurs. …”
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REMAINS OF A JUVENILE PHYTOSAUR FROM THE LATE TRIASSIC OF NORTHERN ITALY
Published 2008-03-01“…The caudal vertebrae belong to an archosaur, most probably an immature specimen of the phytosaur Mystriosuchus, as suggested by detailed comparison with the corresponding caudal vertebrae of the adult and complete Mystriosuchus specimen collected in the same area. …”
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46
Estimating cranial musculoskeletal constraints in theropod dinosaurs
Published 2015-01-01“…Here, a digital modelling approach using the freely available visualization and animation software Blender is applied to estimate cranial muscle length changes and optimal and maximal possible gape in different theropod dinosaurs. Models of living archosaur taxa (Alligator mississippiensis, Buteo buteo) were used in an extant phylogenetically bracketed framework to validate the method. …”
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47
Evolution of Mammals /
Published 2012“…But in the Triassic period a previously obscure group of sauropsids, the archosaurs, became the dominant vertebrates and one archosaur group, the dinosaurs, dominated the rest of the Mesozoic era. …”
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LATE TRIASSIC (EARLY-MIDDLE CARNIAN) CRUROTARSAN TRACKS FROM THE VAL SABBIA SANDSTONE (EASTERN LOMBARDY, BRESCIAN PREALPS, NORTHERN ITALY)
Published 2009-11-01“…All the trackways can be attributed to a crurotarsan archosaur trackmaker and at least three of them could be assigned with confidence to the ichnogenus Brachychirotherium Beurlen 1950. …”
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49
The relationships of the Euparkeriidae and the rise of Archosauria
Published 2016-01-01“…This optimization indicates that the ancestral archosaur was probably similar in many respects to euparkeriids, being relatively small, terrestrial, carnivorous and showing relatively cursorial limb morphology; this Bauplan may have underlain the exceptional radiaton and success of crown Archosauria.…”
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50
Heteropelta boboi n. gen., n. sp. an armored archosauriform (Reptilia: Archosauromorpha) from the Middle Triassic of Italy
Published 2021-11-01“…Unlike other armored archosaurs, the osteoderms are imbricated with the posterior osteoderm overlapping the anterior one. …”
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51
A Late Cretaceous dinosaur and crocodyliform faunal association-based on isolate teeth and osteoderms-at Cerro Fortaleza Formation (Campanian-Maastrichtian) type locality, Santa Cr...
Published 2021-01-01“…Since non-titanosaur dinosaur bones are almost absent in the locality, the teeth presented here provide a window onto the archosaur biodiversity of the Late Cretaceous in southern Patagonia. …”
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52
An archosauromorph dominated ichnoassemblage in fluvial settings from the late Early Triassic of the Catalan Pyrenees (NE Iberian Peninsula).
Published 2017-01-01“…Archosauromorphs radiated and diversified through the Triassic vertebrate recovery, which ultimately lead to the archosaur and dinosaur dominance of the Mesozoic.…”
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53
From sprawling to parasagittal locomotion in Therapsida: A preliminary study of historically collected museum specimens
Published 2022-10-01“…The specimens included are the archosaur Hyperodapedon sanjuanensis, the early synapsid Dimetrodon limbatus for comparison, and the therapsids Keratocephalus moloch, Sauroctonus parringtoni, Tetragonias njalilus, and Belesodon magnificus. …”
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Raman Spectroscopy Detects Amorphous Carbon in an Enigmatic Egg From the Upper Cretaceous Wido Volcanics of South Korea
Published 2020-01-01“…It is apparent that the material of this study is not a dinosaur egg but might belong to a crocodyliform or choristoderan egg, and even other non-dinosaur archosaur can be a candidate as well.…”
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Unexpected morphological variability in the eggshells of the South American caimans Caiman latirostris and Caiman yacare
Published 2023-03-01“…Further comprehensive morphological analyses on other modern and fossil crocodilian eggshells using micro-CT technology will shed new light on the evolution of reproductive strategies in this intriguing archosaur clade.…”
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New insights on Prestosuchus chiniquensis Huene, 1942 (Pseudosuchia, Loricata) based on new specimens from the “Tree Sanga” Outcrop, Chiniquá Region, Rio Grande do Sul, Brazil
Published 2016-02-01“…The ‘rauisuchians’ are a group of Triassic pseudosuchian archosaurs that displayed a near global distribution. …”
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Evolution of an Epidermal Differentiation Complex (EDC) Gene Family in Birds
Published 2021-05-01“…We provide evidence that the EDAA gene family originated in an early archosaur ancestor, and has since expanded in birds, crocodiles and turtles, respectively. …”
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Using genes as characters and a parsimony analysis to explore the phylogenetic position of turtles.
Published 2013-01-01“…Our concatenated data analysis strongly supported turtle as the sister-group to archosaurs (the archosaur hypothesis), similar to several recent genomic data based studies using similar methods. …”
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Dinosaurs: Comparative Cytogenomics of Their Reptile Cousins and Avian Descendants
Published 2022-12-01“…The close karyotypic similarity to the soft-shelled turtle (<i>n</i> = 33) suggests that this basic pattern was mostly established before the Testudine–Archosaur divergence, ~255 MYA. That is, dinosaurs most likely had similar karyotypes and their extensive phenotypic variation may have been mediated by increased random chromosome segregation and genetic recombination, which is inherently higher in karyotypes with more and smaller chromosomes.…”
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Intra-genomic GC heterogeneity in sauropsids: evolutionary insights from cDNA mapping and GC<sub>3</sub> profiling in snake
Published 2012-11-01“…</p> <p>Conclusion</p> <p>Our results suggest that the chromosome size-dependent GC heterogeneity had already occurred before the lepidosaur-archosaur split, 275 million years ago. This character was probably present in the common ancestor of lepidosaurs and but lost in the lineage leading to <it>Anolis</it> during the diversification of lepidosaurs. …”
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