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Clade
Subclade

Taxon
Taxon
Goyocephalia
Nominal Author
Sereno 1986
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 was first defined by Maryanska et al. (2004), who erected a node-based definition to enumerate a clade consisting of Goyocephale, Homalocephale, Ornatotholus, Stygimoloch, Stegoceras, Tylocephale, Prenocephale, and Pachycephalosaurus.
 

Definitional History #1
Earliest Record
The most recent common ancestor of Goyocephale and Pachycephalosaurus and all the descendants of this common ancestor.
Latest Record
Maryanska, Chapman, and Weishampel 2004:474
Range (My)
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Goyocephale, Pachycephalosaurus
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Definitional History #2
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Definitional History #7
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Definitional History #9
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Definitional History #10
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