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 | |
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Latest Record | |
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Definitional History #5 | |
Earliest Record | |
Latest Record | |
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Definitional History #6 | |
Earliest Record | |
Latest Record | |
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Definitional History #7 | |
Earliest Record | |
Latest Record | |
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Definitional History #8 | |
Earliest Record | |
Latest Record | |
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Definitional History #9 | |
Earliest Record | |
Latest Record | |
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Definitional History #10 | |
Earliest Record | |
Latest Record | |
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