Clade | |
Subclade |
Taxon | |
Taxon |
Alvarezsauridae
|
Nominal Author | Bonaparte 1991 |
2nd Nominal Author | |
Taxon Status | ACTIVE |
Comments | The active definition is a first-order revision of the first phylogenetic definition given by Sereno (1999b). It is stem-based like the original but is not affected by any of the postulated immediate sister taxa--including avians. Shuvuuia deserti was chosen as the internal specifier because it is well known and nested among alvarezsaurid. By comparison, the eponymous species Alvarezsaurus calvoi (Chiappe et al. 2002) is poorly known although clearly related. This nominotypical species could be included as a positive taxon qualifier, although the definition is presented without its inclusion here because of its clear relationship with Shuvuuia. |
Potential Synonomy |
Active Phylogenetic Definition | |
Active Definition |
The most inclusive clade containing Shuvuuia deserti Chiappe et al. 1998 but not Ornithomimus edmontonicus Sternberg 1933, Tyrannosaurus rex Osborn 1905, Therizinosaurus cheloniformis Maleev 1954, Oviraptor philoceratops Osborn 1924, Troodon formosus Leidy 1856, Passer domesticus (Linnaeus 1758).
|
Shorthand |
> Shuvuuia deserti but not Ornithomimus edmontonicus, Tyrannosaurus rex, Therizinosaurus cheloniformis, Oviraptor philoceratops, Troodon formosus, Passer dome |
Definitional Author |
Sereno 2005 |
Definition Status | checked |
Definition Type | STEM |
Node-Stem Triplet | NO |
Other Triplet Taxa | |
Specifiers | |
Specifier(s) A |
Shuvuuia deserti |
Specifier(s) B | |
Specifier(s) C |
Ornithomimus edmontonicus, Tyrannosaurus rex, Therizinosaurus cheloniformis, Oviraptor philocer
|
Qualifiers | |
+Taxon | |
-Taxon | |
Datum | |
Taxonomic Content | |
Publication Year |
Unknown Unknown Unknown 1999 |
Inactive Taxon Status | |
Rejection Criteria | |
Critique | |
Definitional History #1 | |
Earliest Record | All ornithomimosaurs closer to Shuvuuia than to Ornithomimus. |
Latest Record | Sereno 1999b:2147 |
Range (My) | |
Range (My) |
Shuvuuia, Ornithomimus |
Range (My) |
Definitional History #2 | |
Earliest Record | |
Latest Record | |
Range (My) | |
Range (My) | |
Range (My) |
Definitional History #3 | |
Earliest Record | |
Latest Record | |
Range (My) | |
Range (My) | |
Range (My) |
Definitional History #4 | |
Earliest Record | |
Latest Record | |
Range (My) | |
Range (My) | |
Range (My) |
Definitional History #5 | |
Earliest Record | |
Latest Record | |
Range (My) | |
Range (My) | |
Range (My) |
Definitional History #6 | |
Earliest Record | |
Latest Record | |
Range (My) | |
Range (My) | |
Range (My) |
Definitional History #7 | |
Earliest Record | |
Latest Record | |
Range (My) | |
Range (My) | |
Range (My) |
Definitional History #8 | |
Earliest Record | |
Latest Record | |
Range (My) | |
Range (My) | |
Range (My) |
Definitional History #9 | |
Earliest Record | |
Latest Record | |
Range (My) | |
Range (My) | |
Range (My) |
Definitional History #10 | |
Earliest Record | |
Latest Record | |
Range (My) | |
Range (My) | |
Range (My) |