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Clade
Subclade

Taxon
Taxon
Tianchungosauroidea
Nominal Author
Zhao 1983
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 no definition
other
Critique
Zhao (1983:301) erected this taxon to contain pachycephalosaurids and a taxon cited as “Chaoyoungosaurus” (later formally named Chaoyangsaurus yangi and described as a basal ceratopsian; Zhao et al. 1999). Tianchungosauroidea is not based on an existing genus and thus is invalid.
 

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