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Clade
Subclade

Taxon
Taxon
Ornithischiformes
Nominal Author
Cooper 1985
2nd Nominal Author
Taxon Status INACTIVE
Comments
Potential Synonomy
Phytodinosauria

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 historically polyphyletic
no definition
Critique
No definition has been proposed.  Cooper (1985) coined Ornithischiformes in passing to unite Sauropodomorpha (his Pachypodosauria) and Ornithschia—a clade that has not been supporteed by cladistic analysis.  It is equivalent to Bakker's (1986) independently coined taxon Phytodinosauria.
 

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