View Details:  Prev Record    Next Record
Clade
Subclade

Taxon
Taxon
Ceratopsidae
Nominal Author
Marsh 1888
2nd Nominal Author
Taxon Status ACTIVE
Comments
The active definition is a first-order revision of that in Sereno (1998) and Dodson et al. (2004) that uses species as specifiers. For simplicity in using complementary taxa at a node-stem triplet, the definition uses Centrosaurus apertus rather than Pachyrhinosaurus canadensis. Pachyrhinosaurus is neither more nested or more completely known within the clade than Centrosaurus.
Potential Synonomy
Ceratopsoidae (Hay 1930, spelling variant); Ceratopidae (Kuhn 1967, spelling variant)

Active Phylogenetic Definition
Active Definition
The least inclusive clade including Triceratops horridus Marsh 1889 and Centrosaurus apertus Lambe 1904.
Shorthand
< Triceratops horridus and Centrosaurus apertus.
Definitional Author
Sereno 2005
Definition Status checked
Definition Type NODE
Node-Stem Triplet NODE
Other Triplet Taxa
Chasmosaurinae, Centrosaurinae
Specifiers
Specifier(s) A
Triceratops horridus
Specifier(s) B
Centrosaurus apertus
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
Pachyrhinosaurus, Triceratops, their most recent common ancestor and all descendants.
Latest Record
Sereno 1998:62
Range (My)
Range (My)
Pachyrhinosaurus, Triceratops
Range (My)

Definitional History #2
Earliest Record
The clade consisting of Centrosaurus and Triceratops and their most recent common ancestor and all of its descendants.
Latest Record
Dodson et al. 2004:494
Range (My)
Range (My)
Centrosaurus, Triceratops
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)