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Clade
Subclade

Taxon
Taxon
Neotheropoda
Nominal Author
Bakker 1986
2nd Nominal Author
Taxon Status ACTIVE
Comments

Bakker (1986) coined the taxon; Sereno (1998) coined the first phylogenetic definition. The active definition is a first-order revision of the original definition that replaces Neornithes with Passer domesticus.

Padian et al. (1999) suggested Ceratosaurus as as a specifier, presumably because of its eponymous relationship with the included taxon Certaosauria. With the recent discovery of more complete abelisaurid specimens, the original contents of Ceratosuria has been split (Carrano et al. 2002, Wilson et al. 2003). Using Coelophysis now identifies a different clade than Ceratosaurus. Deeply nested taxa, such as Coelophysis are preferable for this very reason. Additionally, the taxon is the node of a node-stem triplet, linked to gether by complementary definitions that use the same set of specifiers. Wilson et al. (2003) cited the species Coelophysis bauri.

Potential Synonomy

Active Phylogenetic Definition
Active Definition
The least inclusive clade containing Coelophysis bauri (Cope 1889) and Passer domesticus (Linnaeus 1758).
Shorthand
< Coelophysis bauri and Passer domesticus.
Definitional Author
Sereno 2005
Definition Status checked
Definition Type NODE
Node-Stem Triplet NODE
Other Triplet Taxa
Coelophysoidea, Tetanurae
Specifiers
Specifier(s) A
Coelophysis bauri
Specifier(s) B
Passer domesticus
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, Neornithes, their most recent common ancestor and all descendants.
Latest Record
Sereno 1998:64
Range (My)
Range (My)
Coelophysis, Neornithes
Range (My)

Definitional History #2
Earliest Record
The most recent common ancestor uniting Neornithes and Ceratosaurus, and all descendants of that common ancestor.
Latest Record
Padian et al. 1999:70
Range (My)
Range (My)
Ceratosaurus, Neornithes
Range (My)

Definitional History #3
Earliest Record
The least inclusive clade inclusing Coelophysis bauri and Neornithes.
Latest Record
Wilson et al. 2003:30
Range (My)
Range (My)
Coelophysis bauri, Neornithes
Range (My)

Definitional History #4
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Definitional History #7
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Definitional History #8
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Definitional History #9
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Definitional History #10
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