Coelophysidae

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Coelophysids
Temporal range: Late Triassic-Early Jurassic, 220–183 Ma
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Skull comparison of Coelophysidae (Coelophysis rhodesiensis at the top left, Panguraptor lufengensis at the top right, Coelophysis bauri at the bottom left, Coelophysis kayentakatae at the bottom right)
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Order: Saurischia
Suborder: Theropoda
Superfamily: Coelophysoidea
Family: Coelophysidae
Nopcsa, 1923
Type species
<templatestyles src="Noitalic/styles.css"/>Coelurus bauri
Cope, 1887
Genera
Synonyms
  • Procompsognathidae Nopcsa, 1923
  • Segisauridae Camp, 1936

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The Coelophysidae are a family of primitive carnivorous theropod dinosaurs. Most species were relatively small in size. The family flourished in the Late Triassic and Early Jurassic periods.

Under cladistic analysis, Coelophysidae was first defined by Paul Sereno in 1998 as the most recent common ancestor of Coelophysis bauri and Procompsognathus triassicus, and all of that common ancestor's descendants.

Coelophysidae is part of the clade Coelophysoidea. The older term "Podokesauridae", named 14 years prior to Coelophysidae (which would normally grant it priority), is now usually ignored, since its type specimen was destroyed in a fire and can no longer be compared to new finds.[2]

Relationships

The cladogram below was recovered in a study by Matthew T. Carrano, John R. Hutchinson and Scott D. Sampson, 2005.[3]



Procompsognathus



Segisaurus




Coelophysis




Megapnosaurus rhodesiensis



Megapnosaurus kayentakatae





The cladogram below follows the topology from a 2011 analysis by paleontologists Martin D. Ezcurra and Stephen L. Brusatte, modified with additional data by You Hai-Lu and colleagues in 2014.[4][1]



"Syntarsus" kayentakatae




Panguraptor lufengensis




Coelophysis bauri




Coelophysis rhodesiensis



Camposaurus arizonensis






See also

References

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  2. Sereno, P. (1999). "Taxon Search: Coelophysidae". Accessed 2009-09-02.
  3. Carrano, M.T, Hutchinson, J.R, Sampson, S.D. (2005). "New information on Segisaurus halli, a small theropod dinosaur from the Early Jurassic of Arizona." Journal of Vertebrate Paleontology. 25(4):835-849.
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