Clade | |
Subclade |
Taxon | |
Taxon |
Diplodocoidea
|
Nominal Author | Marsh 1884 |
2nd Nominal Author | Upchurch 1995 |
Taxon Status | ACTIVE |
Comments | Upchurch (1995) was first to use the superfamily. He included Quaesitosaurus and Nemegtosaurus (see also Upchurch 1998, 1999; Upchurch et al. 2004); the definition later employed followed that of the initial definition (Sereno 1998:63). The two aforementioned genera are likely synonyms and more likely represent a titanosaurian (Wilson 2002, in press). They are not used in the active definition and are regarded as lying outside Diplodocoidea. Recently Taylor and Naisch (2005:2-3) discussed in detail the history of the taxon Diplodocoidea and also used the defnition of Sereno (1998). The active definition is a first-order revision of Sereno (1998:63) that uses species instead of genera. Wilson and Sereno (1998) used a very similar definition but list two other genera (Rayososaurus, Amphicoelias). These genera, however, are not necessary to include in the definition and have their own taxonomic complications. Here they are excluded from the definition and allowed to fall where they may.
|
Potential Synonomy | Diplodocoidae (Hunt et al. 1994, Upchurch 1998, misspelling) |
Active Phylogenetic Definition | |
Active Definition |
The most inclusive clade containing Diplodocus longus Marsh 1878 but not Saltasaurus loricatus Bonaparte and Powell 1980.
|
Shorthand |
> Diplodocus longus but not Saltasaurus loricatus. |
Definitional Author |
Sereno 2005 |
Definition Status | checked |
Definition Type | STEM |
Node-Stem Triplet | STEM |
Other Triplet Taxa |
Neosauropoda, Macronaria |
Specifiers | |
Specifier(s) A |
Diplodocus longus |
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 | Neosauropods more closely related to Diplodocus than to Saltasaurus, including Rayososaurus, Amphicoelias, dicraeosaurids, and diplodocids. |
Latest Record | Wilson and Sereno 1998:63 |
Range (My) | |
Range (My) |
Diplodocus, Saltasaurus |
Range (My) | Rayososaurus, Amphicoelias, dicraeosaurids, diplodocids |
Definitional History #2 | |
Earliest Record | All neosauropods closer to Diplodocus than to Saltasaurus. |
Latest Record | Sereno 1998:63 |
Range (My) | |
Range (My) |
Diplodocus, Saltasaurus |
Range (My) |
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Definitional History #7 | |
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Definitional History #8 | |
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Definitional History #9 | |
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Definitional History #10 | |
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