News tagged with archosaur
Archosaur
Archosaurs are a group of diapsid amniotes whose living representatives consist of modern birds and crocodilians. This group also includes all extinct non-avian dinosaurs, many 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: Crurotarsi, which includes crocodilians and their extinct relatives, and Avemetatarsalia, which includes pterosaurs and dinosaurs (of which birds are the only living clade).
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China fossil shows bird, crocodile family trees split earlier than thought
A fossil unearthed in China in the 1970s of a creature that died about 247 million years ago, originally thought to be a distant relative of both birds and crocodiles, turns out to have come from the crocodile ...
Other Sciences / Archaeology & Fossils
May 18, 2011 |
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Infant crocodile fossils unearthed at Arlington Archosaur Site in North Arlington
(PhysOrg.com) -- Palentologists have found the partial skull of an infant crocodile at the Arlington Archosaur Site, a prolific fossil site in North Arlington. The young reptile's skull is a tiny version of the adult skull ...
Other Sciences / Archaeology & Fossils
May 28, 2010 |
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Gators Breathe Like Birds: Did Dinosaurs’ Ancestors Inhale Their Way To Dominance?
University of Utah scientists discovered that air flows in one direction as it loops through the lungs of alligators, just as it does in birds. The study suggests this breathing method may have helped the ...
Other Sciences / Archaeology & Fossils
Jan 14, 2010 |
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Search results for archosaur
Change in developmental timing was crucial in the evolutionary shift from dinosaurs to birds: study
At first glance, it's hard to see how a common house sparrow and a Tyrannosaurus Rex might have anything in common. After all, one is a bird that weighs less than an ounce, and the other is a dinosaur that ...
Other Sciences / Archaeology & Fossils
May 27, 2012 |
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Scientists lift lid on turtle evolution
The turtle is a closer relative of crocodiles and birds than of lizards and snakes, according to researchers who claim to have solved an age-old riddle in animal evolution.
May 16, 2012 |
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Key genes may contain insight into evolution of dinosaurs
(PhysOrg.com) -- Birds and alligators have little in common, other than that the first is sometimes the other's lunch. That hasn't always been the case, though, and that's what attracts Arkhat Abzhanov.
Nov 05, 2010 |
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Oldest evidence of dinosaurs found in Polish footprints
fossilized tracks -- is described this week in Proceedings of the Royal Society B. Just one or two million years after the massive Permian-Triassic extinction, an animal smaller than a house cat walked across ...
Other Sciences / Archaeology & Fossils
Oct 06, 2010 |
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Demoting a dinosaur: New fossil material redefines Azendohsaurus as a peculiar early reptile
Azendohsaurus just shed its dinosaur affiliation. A careful new analysis of A. madagaskarensis -- this time based on the entire skull rather than on just teeth and jaws -- aligns this 230-million-year-old animal with a ...
Other Sciences / Archaeology & Fossils
May 18, 2010 |
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Loyal alligators display the mating habits of birds
Alligators display the same loyalty to their mating partners as birds reveals a study published today in Molecular Ecology. The ten-year-study by scientists from the Savannah River Ecology Laboratory reveal ...
Oct 07, 2009 |
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From the egg, baby crocodiles call to each other and to mom
For the first time, researchers have shown that the pre-hatching calls of baby Nile crocodiles actually mean something to their siblings and to their mothers. The calls—which are perfectly audible to humans and sound like ...
Biology /
Jun 23, 2008 |
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What Did Dinosaurs Hear?
What did dinosaurs hear? Probably a lot of low frequency sounds, like the heavy footsteps of another dinosaur, if University of Maryland professor Robert Dooling and his colleagues are right. What they likely couldn't hear ...
Biology /
Jun 04, 2007 |
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Shoulder ligament a linchpin in the evolution of flight
Brown and Harvard scientists have learned that a single ligament at the shoulder joint stabilizes the wings of birds during flight. In an advanced online publication of Nature, they explain how this tough ...
Biology /
Dec 18, 2006 |
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List of search results for archosaur
