Archosaurs Wiki - What is the archosaurs?
Archosaurs are a group of diapsid amniotes whose living representatives consist of birds and crocodilians. This group also includes all extinct dinosaurs, extinct crocodilian relatives, and pterosaurs. Archosauria, the archosaur clade, is a crown group that includes the most recent common ancestor of living birds and crocodilians. It includes two main clades: Pseudosuchia, which includes crocodilians and their extinct relatives, and Avemetatarsalia, which includes birds and their extinct relatives (such as non-avian dinosaurs and pterosaurs)..
What does the word archosaurs mean? Find synonyms, antonyms and the meaning of the word archosaurs in our free online dictionary! Find words starting with archosaurs and anagrams of archosaurs.
Definitions of "archosaurs"
- Plural form of archosaur. noun
The word "archosaurs" in example sentences
Ryosuke Motani and Lars Schmitz - with the University of California, Davis - found structural evidence in the skulls of 33 so-called archosaurs, land-based dinosaurs and flying pterosaurs.. [The Australian | News |]
The finding has implications for our understanding of ancient life-forms, because alligators and birds share a distant common ancestor. mass extinction event that occurred 251 million years ago - called "the Great Dying" - a group of creatures called archosaurs (Greek for "ruling lizards") became the dominant land animals on Earth.. [Livescience.com]
Plesiosaurs and ichthyosaurs are not in any sense archosaurs or dinosaurs.. [Darwinopterus, the New Flying Reptile » E-Mail]
Heilmann argued that birds could not have descended from dinosaurs predominantly because dinosaurs lacked clavicles, or so he thought, and he therefore favoured the idea that birds originated from the so-called 'pseudosuchians': primitive archosaurs that were also thought ancestral to dinosaurs and crocodilians.. [Scientists Come to a Conclusion: Asteroid Killed the Dinosaurs | Universe Today]
The take-home message from such a conflict is that in addition to critically scrutinizing current theories on how mammals and archosaurs supposedly coexisted we should also be carefully examining what we do and do not know about the vertebrate sequence.. [Building Trees Sequentially]
I stayed in (too weary for eyes on me, and the autumn sky) and read "Superiority, Competition, and Opportunism in the Evolutionary Radiation of Dinosaurs" (Science, 12 September 2008), which examines the question of just how dinosaurs managed to come out of the Triassic so much better off than their crurotarsan contemporaries (non-dinosaurian archosaurs, including phytosaurs, aetosaurs, 'rauisuchians,' etc.).. ["Hallways...always..."]
The archosaurs had mouths similar in shape to a reptile's.. [Bird Teeth]
The exposures in the park are Late Triassic in age and contain early dinosaurs, labyrinthodont amphibians, and many crocodile-line archosaurs and well as numerous plants and freshwater invertebrates.. [Archive 2009-03-01]
Labels: archosaurs, dinosaurs, Mesozoic, sauropods posted by Darren Naish at 9: 37 PM. [Finally, some hot giant amphicoelian action]
Labels: archosaurs, dinosaurs, Mesozoic, sauropods posted by Darren Naish at 10: 45 PM. [Biggest sauropod ever (part…. II)]
Labels: archosaurs, dinosaurs, Mesozoic, sauropods posted by Darren Naish at 11: 11 PM. [Biggest…. sauropod…. ever (part…. I)]
Dinosaurs and other archosaurs, such as the pterosaurs, dominated the land biota.. [Mesozoic]
Most of the fossils are found in the uppermost levels of the formation and consist almost entirely of archosaurs, including large herbivorous and carnivorous species, true primitive crocodiles and primitive true mammals about the size of a rat.. [Ischigualasto-Talampaya, Argentina]
And the presence of the glands in this location might explain another unusual aspect of metriorhynchid cranial anatomy, namely the strange elongate, groove-like antorbital fossae present in these animals (the antorbital fossa is an accessory opening present on the side of the skull in archosaurs).. [My party and those marvellous metriorhynchids]
Labels: archosaurs, dinosaurs, Mesozoic, sauropods posted by Darren Naish at 12: 22 PM. [Happy Christmas, from gigantic Spanish sauropods... or, alas, poor ‘Angloposeidon’]
Fernández & Gasparini (2000) suggested that the specialised fossae might have been used to drain unwanted saline secretions from the glands – a novel function for the structures not seen in other archosaurs.. [My party and those marvellous metriorhynchids]
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News about archosaurs
New discovery pushes origin of feathers back by 70 million years
An international team of palaeontologists, which includes the University of Bristol, has discovered that the flying reptiles, pterosaurs, actually had four kinds of feathers, and these are shared with dinosaurs - pushing back the origin of feathers by some 70…
New dinosaur feathers discovered on pterosaurs
New evidence was discovered that suggests feathers started appearing on animals around 70 million years earlier than previously suspected. Two anurognathid pterosaurs were studied by a group of paleontologists and research was published this week on their fin…
It's Official: Those Flying Reptiles Called Pterosaurs Were Covered in Fluffy Feathers
There's no doubt anymore: Pterosaurs — the flying reptiles that zipped through the skies during the dinosaur age — sported feathers, a finding that pushes the origin of these fluffy structures back 70 million years.