View Details:  Prev Record    Next Record
Clade
Subclade

Taxon
Taxon
Neoceratopsia
Nominal Author
Sereno 1986
2nd Nominal Author
Taxon Status ACTIVE
Comments
The active definition is a first-order revision of the original definition in Sereno (1998) that uses species as specifiers. The use of the original stem-based definition has been adopted by later authors.
Potential Synonomy

Active Phylogenetic Definition
Active Definition
The most inclusive clade including Triceratops horridus Marsh 1889 but not Psittacosaurus mongoliensis Osborn 1923.
Shorthand
> Triceratops horridus but not Psittacosaurus mongoliensis.
Definitional Author
Sereno 2005
Definition Status checked
Definition Type STEM
Node-Stem Triplet NO
Other Triplet Taxa
Specifiers
Specifier(s) A
Triceratops horridus
Specifier(s) B
Specifier(s) C
Psittacosaurus mongoliensis
Qualifiers
+Taxon
-Taxon
Datum
Taxonomic Content
Publication Year Unknown
Unknown
Unknown
1998

Inactive Taxon Status
Rejection Criteria
Critique
 

Definitional History #1
Earliest Record
All ceratopsians closer to Triceratops than to Psittacosaurus.
Latest Record
Sereno 1998:62
Range (My)
Range (My)
Psittacosaurus, Triceratops
Range (My)

Definitional History #2
Earliest Record
Latest Record
Range (My)
Range (My)
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)