View Details:  Prev Record    Next Record
Clade
Subclade

Taxon
Taxon
Tetanurae
Nominal Author
Gauthier 1986
2nd Nominal Author
Taxon Status ACTIVE
Comments

Gauthier coined and defined Tetnaurae as a stem-based taxon to include all theropods closer to birds than to Ceratosauria, a clade that has since been separated into two clades (Coelophysoidea, Ceratosauria sensu stricto; Wilson et al. 2003). Novas (1992) acknowledged Gauthier’s definition but then, without explanation, redefined Tetanurae as a node-based group for a less inclusive clade. Holtz (1994) and Hutchinson and Padian (1997) used Gauthier’s definition, and Sereno listed Tetanurae as a stem-based taxon, consistent with Gauthier (1986).

Sereno (1998) and Padian et al. (1999) altered “birds” to Neornithes (crown-group birds). Sereno (1998:64) accidentally used an ingroup genus, Torvosaurus, as an external specifier (which clearly contradicted the position of Tetanurae on an associated cladogram), wheras Padian et al. (1999) used Ceratosaurus. Wilson et al. (2003) clarified Sereno’s error, replacing Torvosaurus with Ceratosaurus nasicornis. Although Ceratosaurus is not nested within Ceratosauria, it is the eponymous taxon and it was thought best not to introduce yet another specifier or alternative taxon, a consideration discussed by Wilson et al. (2003).

The active definiton is a first-order revision of that in Wilson et al. (2003) that replaces Neornithes with Passer domesticus and adds one additional, nested species, Carnotaurus sastrei, to ensure the stability of the taxonomic content of Tetanurae.

Potential Synonomy
Dinoaves, Tenarurae (Chure and McIntosh, misspelling)

Active Phylogenetic Definition
Active Definition
The most inclusive clade containing Passer domesticus (Linnaeus 1758) but not Ceratosaurus nasicornis Marsh 1884, Carnotaurus sastrei Bonaparte 1985.
Shorthand
> Passer domesticus but not Ceratosaurus nasicornis, Carnotaurus sastrei.
Definitional Author
Sereno 2005
Definition Status checked
Definition Type STEM
Node-Stem Triplet NO
Other Triplet Taxa
Specifiers
Specifier(s) A
Passer domesticus
Specifier(s) B
Specifier(s) C
Ceratosaurus nasicornis, Carnotaurus sastrei
Qualifiers
+Taxon
-Taxon
Datum
Taxonomic Content
Publication Year Unknown
Unknown
Unknown
1986

Inactive Taxon Status
Rejection Criteria
Critique
 

Definitional History #1
Earliest Record
Birds and all other theropods closer to birds than they are to Ceratosauria.
Latest Record
Gauthier 1986:23
Range (My)
Range (My)
birds, Ceratosauria
Range (My)

Definitional History #2
Earliest Record
The group which includes the common ancestor of Aves, Allosaurus and all its descendants [in Spanish].
Latest Record
Novas 1992:144
Range (My)
Range (My)
Aves, Allosaurus
Range (My)

Definitional History #3
Earliest Record
All neotheropods closer to Neornithes than to Torvosaurus.
Latest Record
Sereno 1998:64
Range (My)
Range (My)
Neornithes, Torvosaurus
Range (My)

Definitional History #4
Earliest Record
All neotheropod more closely related to Neornithes than to Ceratosaurus.
Latest Record
Padian et al. 1999:72
Range (My)
Range (My)
Neornithes, Ceratosaurus
Range (My)

Definitional History #5
Earliest Record
The most inclusive clade including Neornithes but not Ceratosaurus nasicornis.
Latest Record
Wilson et al. 2003:30
Range (My)
Range (My)
Neornithes, Ceratosaurus nasicornis
Range (My)

Definitional History #6
Earliest Record
Passer domesticus (the extant European sparrow) and all taxa sharing a more recent common ancestor with P. domesticus than with Ceratosaurus nasicornis.
Latest Record
Holtz et al. 2004:78-79
Range (My)
Range (My)
Passer domesticus, Ceratosaurus nasicornis
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)