View Details:  Prev Record    Next Record
Clade
Subclade

Taxon
Taxon
Neoceratosauria
Nominal Author
Novas 1992
2nd Nominal Author
Taxon Status INACTIVE
Comments
Potential Synonomy

Active Phylogenetic Definition
Active Definition
Shorthand
Definitional Author
Definition Status Unknown
Definition Type Unknown
Node-Stem Triplet Unknown
Other Triplet Taxa
Specifiers
Specifier(s) A
Specifier(s) B
Specifier(s) C
Qualifiers
+Taxon
-Taxon
Datum
Taxonomic Content
Publication Year Unknown
Unknown
Unknown

Inactive Taxon Status
Rejection Criteria other
Critique

This taxon is not regarded as active, given recent work on basal theropod relationships. The taxon was coined but not defined by Novas (1992). Holtz (1994) proposed a node-based definition based on Ceratosaurus and Abelisauridae. Padian et al. (1999), without comment on Holtz’s prior node-based definition, coined a stem-based definition using Ceratosaurus and Coelophysis as internal and external specifiers, respectively. Tykoski and Rowe (2004) cite Padian et al.’s (1999) definition but attribute it to (Holtz 1994), who used a very different definition.

Similar to Sereno’s Ceratosauroidea, Neoceratosauria no longer applies to a subset with Ceratosauria that also includes Coelophysoidea—if one accepts new phylogenetic arrangements (Carrano et al. 2002, Wilson et al. 2003). Rather it would include most ceratosaurs (sensu stricto) except possibly Elaphrosaurus. the utility of the taxon, thus, is compromised.

 

Definitional History #1
Earliest Record
The most recent common ancestor of Ceratosaurus and Abelisauridae and all of its descendants.
Latest Record
Holtz 1994:1104
Range (My)
Range (My)
Ceratosaurus, Abelisauridae
Range (My)

Definitional History #2
Earliest Record
All ceratosaurs closer to Ceratosaurus than to Coelophysis.
Latest Record
Padian et al. 1999:70
Range (My)
Range (My)
Ceratosaurus, Coelophysis
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)