View Details:  Prev Record    Next Record
Clade
Subclade

Taxon
Taxon
Coelophysidae
Nominal Author
Nopcsa 1928
2nd Nominal Author
Paul 1988
Taxon Status ACTIVE
Comments

The taxon was first named by Paul (1988) based on Nopcsa’s (1928) subfamily Coelophysinae. Sereno (1998) provided the first definition. The active definition is a first-order revision that uses species rather than genera.

Tykoski and Rowe (2004) created a new definition for Coelophysidae using Syntarsus rather than Procompsognathus as an internal specifier, incorrectly citing Holtz (1994) as the source. Holtz (1994), however, did not discuss or define the taxonomic contents of Coelophysidae. They rejected the use of Coelophysidae sensu Sereno because their analysis finds Procompsognathus to be “unsteady under certain conditions.” Their consensus cladogram (Tykoski and Rowe 2004:3.12A) summarizing the results of their anaysis, however, shows Procompsognathus in a fully resolved position that would identify the same clade of coelophysoids as circumscribed by Sereno (1998).

Thus, there is little reason to alter the definition with Tykoski and Rowe’s (2004) second-order revision, as all analyses available show Syntarsus as closer to Coelophysis than Procompsognathus, and Procompsognathus as closer to Coelophysis than Liliensternus or other coelophysoids.

Potential Synonomy

Active Phylogenetic Definition
Active Definition
The least inclusive clade containing Coelophysis bauri (Cope 1889) and Procompsognathus triassicus Fraas 1913.
Shorthand
< Coelophysis bauri and Procompsognathus triassicus.
Definitional Author
Sereno 1998
Definition Status checked
Definition Type NODE
Node-Stem Triplet NODE
Other Triplet Taxa
Coelophysinae, Procompsognathinae
Specifiers
Specifier(s) A
Coelophysis bauri
Specifier(s) B
Procompsognathus triassicus
Specifier(s) C
Qualifiers
+Taxon
-Taxon
Datum
Taxonomic Content
Publication Year Unknown
Unknown
Unknown
1998

Inactive Taxon Status
Rejection Criteria
Critique
 

Definitional History #1
Earliest Record
Coelophysis, Procompsognathus, their most recent common ancestor and all descendants.
Latest Record
Seeno 1998:64
Range (My)
Range (My)
Coelophysis, Procompsognathus
Range (My)

Definitional History #2
Earliest Record
Coelophysis, Syntarsus and all descendants of their most recent common ancestor.
Latest Record
Tykoski and Rowe 2004:64
Range (My)
Range (My)
Coelophysis, Syntarsus
Range (My)

Definitional History #3
Earliest Record
Latest Record
Range (My)
Range (My)
Range (My)

Definitional History #4
Earliest Record
Latest Record
Range (My)
Range (My)
Range (My)

Definitional History #5
Earliest Record
Latest Record
Range (My)
Range (My)
Range (My)

Definitional History #6
Earliest Record
Latest Record
Range (My)
Range (My)
Range (My)

Definitional History #7
Earliest Record
Latest Record
Range (My)
Range (My)
Range (My)

Definitional History #8
Earliest Record
Latest Record
Range (My)
Range (My)
Range (My)

Definitional History #9
Earliest Record
Latest Record
Range (My)
Range (My)
Range (My)

Definitional History #10
Earliest Record
Latest Record
Range (My)
Range (My)
Range (My)