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Clade
Subclade

Taxon
Taxon
Mamenchisauridae
Nominal Author
Young and Chao 1972
2nd Nominal Author
Taxon Status INACTIVE
Comments
Potential Synonomy
Omeisauridae

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
Critique
No definition has been proposed. The family has often included Omeisaurus and other genera with distant relationships, such as Euhelopus (Upchurch, 1995).  Originally is was coined by Young and Zhao (1972:2) as a monotypic and thus reduntant taxon.
 

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