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Clade
Subclade

Taxon
Taxon
Stegosauroidea
Nominal Author
Marsh 1880
2nd Nominal Author
Hay 1902
Taxon Status INACTIVE
Comments
Potential Synonomy
Stegosauria, Stegosauroidae (Hay 1930, spelling variant)

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
redundant
Critique
No definition has been proposed. Hay (1902) coined Stegosauroidea, which was soon reduced in synonomy with Stegosauria (Steel 1969). Zhao (1983) erected the taxon without knowledge that it already existed. Cooper (1985) attributed the taxon in error to Marsh (1877) and used it as a redundant taxon including Stegosauridae.
 

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