Clade | |
Subclade |
Taxon | |
Taxon |
Lithostrotia
|
Nominal Author | Wilson and Upchurch 2003 |
2nd Nominal Author | |
Taxon Status | ACTIVE |
Comments | This taxon was first used by Wilson and Upchurch (2003:156). They credited authorship of both the taxon and its definition to Upchurch et al. (2004), a chapter in The Dinosauria that was in press at that time. Like Wilson and Upchurch (2003), Upchurch et al. (2004:311) defined Lithostrotia as a node-based taxon but used genera, as opposed to the species used by Wilson and Upchurch (2003). Thus, the two definitions are technically distinct, and so authorship of the taxon and first definition must be attributed to Wilson and Upchurch (2003). There are now several singleton stem taxa at the base of Titanosauria (especially when defined as a catch-all stem-based taxon as in this compilation) and little sign of a diverse basal stem clade. There is therefore utility in coining a less inclusive node-based taxon like Lithostrotia to partition Titanosauria. The active phylogenetic definition is a textual variant of the definition in Wilson and Upchurch (2003). |
Potential Synonomy |
Active Phylogenetic Definition | |
Active Definition |
The least inclusive clade containing Malawisaurus dixeyi Haughton 1928 and Saltasaurus loricatus Bonaparte and Powell 1980.
|
Shorthand |
< Malawisaurus dixeyi and Saltasaurus loricatus. |
Definitional Author |
Wilson and Upchurch 2003 |
Definition Status | TEXTUAL SUBSTITUTION |
Definition Type | NODE |
Node-Stem Triplet | NO |
Other Triplet Taxa | |
Specifiers | |
Specifier(s) A |
Malawisaurus dixeyi |
Specifier(s) B |
Saltasaurus loricatus |
Specifier(s) C | |
Qualifiers | |
+Taxon | |
-Taxon | |
Datum | |
Taxonomic Content | |
Publication Year |
Unknown Unknown Unknown 2003 |
Inactive Taxon Status | |
Rejection Criteria | |
Critique | |
Definitional History #1 | |
Earliest Record | Malawisaurus dixeyi (Haughton 1928), Saltasaurus loricatus (Bonaparte and Powell 1980), their most recent common ancestor and all descendants. |
Latest Record | Wilson and Upchurch 2003:156 |
Range (My) | |
Range (My) |
Malawisaurus dixeyi, Saltasaurus loricatus |
Range (My) |
Definitional History #2 | |
Earliest Record | The most recent common ancestor of Malawisaurus and Saltasaurus and all the descendants of that ancestor. |
Latest Record | Upchurch et al. 2004:311 |
Range (My) | |
Range (My) |
Malawisaurus, Saltasaurus |
Range (My) |
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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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