View Details:  Prev Record    Next Record
Clade
Subclade

Taxon
Taxon
Abelisauroidea
Nominal Author
Bonaparte and Novas 1985
2nd Nominal Author
Bonaparte 1991
Taxon Status ACTIVE
Comments
Abelisauroidea was coined by Bonaparte (1991) and first defined as a stem-based taxon by Holtz (1994), who incorrectly cited Bonaparte (1991) for the definition. Rowe et al. (1997), Padian et al. (1999) and Tykoski and Rowe (2004) followed Holtz but used species as specifiers. Wilson et al. (2003) and Sereno et al. (2004), on the other hand, presented a node-based definition to better fit the taxon concept of Bonaparte (1991), who divided Abelisauroidea into two families, Noasauridae and Abelisauridae. A node-stem triplet anchored on Abelisauroidea faithfully preserves this dichotomy, which has been supported recently by more complete noasaurid material. By using the more inclusive stem-based definition alluded to above, Abelisauroidea subsumed Abelisauria which, in turn, included Abelisauridae (Tykoski and Rowe 2004:fig. 3.12)—an awkward taxonomy for the Linnean family-group. The active definition is that coined by Wilson et al. (2003).
Potential Synonomy
Abelisauria, Ceratosauroidea, Neoceratosauria

Active Phylogenetic Definition
Active Definition
The least inclusive clade containing Carnotaurus sastrei Bonaparte 1985 and Noasaurus leali Bonaparte and Powell 1980.
Shorthand
< Carnotaurus sastrei and Noasaurus leali.
Definitional Author
Wilson et al. 2003
Definition Status TEXTUAL SUBSTITUTION
Definition Type NODE
Node-Stem Triplet NODE
Other Triplet Taxa
Abelisauridae, Noasauridae
Specifiers
Specifier(s) A
Carnotaurus sastrei
Specifier(s) B
Specifier(s) C
Noasaurus leali
Qualifiers
+Taxon
-Taxon
Datum
Taxonomic Content
Publication Year Unknown
Unknown
Unknown
2003

Inactive Taxon Status
Rejection Criteria
Critique
 

Definitional History #1
Earliest Record
Abelisaurids and those members of the Ceratosaurus-Abelisauridae clade which shared a more recent common ancestry than with the North American genus [Ceratosaurus].
Latest Record
Holtz 1994:1105
Range (My)
Range (My)
Abelisaurids, Ceratosaurus
Range (My)

Definitional History #2
Earliest Record
Abelisauridae and all taxa closer to abelisaurids than to Ceratosaurus nasicornis.
Latest Record
Rowe et al. 1997:109
Range (My)
Range (My)
abelisaurids, Ceratosaurus nasicornis
Range (My)

Definitional History #3
Earliest Record
All taxa closer to Carnotaurus than to Ceratosaurus.
Latest Record
Padian et al. 1997:68A
Range (My)
Range (My)
Carnotaurus, Ceratosaurus
Range (My)

Definitional History #4
Earliest Record
All neoceratosaurs closer to Carnotaurus than to Ceratosaurus.
Latest Record
Padian 1999:70
Range (My)
Range (My)
Carnotaurus, Ceratosaurus
Range (My)

Definitional History #5
Earliest Record
The least inclusive clade containing Carnotaurus sastrei and Noasaurus leali.
Latest Record
Wilson et al. 2003:30
Range (My)
Range (My)
Carnotaurus sastrei, Noasaurus leali
Range (My)

Definitional History #6
Earliest Record
All theropods closer to Carnotaurus sastrei than to Ceratosaurus nasicornis.
Latest Record
Tykoski and Rowe 2004:64
Range (My)
Range (My)
Carnotaurus sastrei, 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)