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Clade
Subclade

Taxon
Taxon
Opisthocoelicaudiinae
Nominal Author
McIntosh 1990
2nd Nominal Author
Taxon Status ACTIVE
Comments

Opisthocoelicaudiinae is the proper spelling of the family name based on Opisthocoelicaudia (ICZN 1999) and was coined by McIntosh (1990:349). Sereno (1998:63) unintentionally listed a spelling variant (Opisthocoelicaudinae).

The active definition is a textual substitution from that in Wilson and Upchurch (2003), where the family name is spelled correctly. Although the definition is now clearly stated, there is some uncertainty as to its taxonomic content, given uncertain relationships among advanced titanosaurians.

Potential Synonomy
Opisthocoelicaudinae (Sereno 1998, spelling variant)

Active Phylogenetic Definition
Active Definition
The least inclusive clade containing Opisthocoelicaudia skarzynskii Borsuk-Bialynicka 1977 but not Saltasaurus loricatus Bonaparte and Powell 1980.
Shorthand
< Opisthocoelicaudia skarzynskii but not Saltasaurus loricatus.
Definitional Author
Wilson and Upchurch 2003
Definition Status TEXTUAL SUBSTITUTION
Definition Type NODE
Node-Stem Triplet NODE
Other Triplet Taxa
Saltasauridae, Saltasaurinae
Specifiers
Specifier(s) A
Opisthocoelicaudia skarzynskii
Specifier(s) B
Specifier(s) C
Saltasaurus loricatus
Qualifiers
+Taxon
-Taxon
Datum
Taxonomic Content
Publication Year Unknown
Unknown
Unknown
1998

Inactive Taxon Status
Rejection Criteria
Critique
 

Definitional History #1
Earliest Record
All saltasaurids closer to Opisthocoelicaudia than to Saltasaurus.
Latest Record
Sereno 1998:63
Range (My)
Range (My)
Opisthocoelicaudia, Saltasaurus
Range (My)

Definitional History #2
Earliest Record
All saltasaurids more closely related to Opisthocoelicaudia skarzynskii (Borsuk-Bialynicka 1977) than to Saltasaurus loricatus (Bonaparte and Powell 1980).
Latest Record
Wilson and Upchurch 2003:156
Range (My)
Range (My)
Opisthocoelicaudia skarzynskii, Saltasaurus loricatus
Range (My)

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