Clade | |
Subclade |
Taxon | |
Taxon |
Neornithopoda
|
Nominal Author | Cooper 1985 |
2nd Nominal Author | |
Taxon Status | INACTIVE |
Comments | |
Potential Synonomy |
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Shorthand | |
Definitional Author | |
Definition Status | Unknown |
Definition Type | Unknown |
Node-Stem Triplet | Unknown |
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+Taxon | |
-Taxon | |
Datum | |
Taxonomic Content | |
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Unknown Unknown Unknown |
Inactive Taxon Status | |
Rejection Criteria |
no definition |
Critique | Cooper (1985) coined this taxon for a clade including heterodontosaurids and marginocephalians (pachycephalosaurs, ceratopsians). Although there has never been significant cladistic support for this clade, occasionally heterodontosaurids are shown as related to either marginocephalians or pachycephalosaurs. Should support grow to link these taxa, the taxon would be available. In this compilation, the stem-based defintions of Pachycephalosauria and Ceratopsia are constructed to exclude heterodontosaurids, should such a sister taxon scenario come to pass. |
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