Clade | |
Subclade |
Taxon | |
Taxon |
Theropoda
|
Nominal Author | Marsh 1891 |
2nd Nominal Author | |
Taxon Status | ACTIVE |
Comments | Gauthier (1986) coined a stem-based definition using birds and sauropodomorphs. Later authors used genera to replace one or both of these specifiers: Currie (1997) used Plateosaurus and Diplodocus instead of Sauropodomorpha; Padian et al. (1999) used Cetiosaurus instead of Sauropodomorpha; Sereno (1998) used Neornithes and Saltasaurus. Most recently, Holtz and Osmólska (2004) used Cetiosaurus oxoniensis and Passer domesticus as specifiers, incorrectly citing this definition as based on Padian and May (1993) and Maryanska et al. (2002) (neither of which define Theropoda). Using Cetiosaurus is problematic given the fragmentary nature of the original type species. There is little gained in my opinion to give great weight to the first named species within a clade or interpretations of the intentions of nineteenth century systematists, when their actions and ideas may have been modified by a century of work and accumulated collections. The active definition is a first order revision of the defnition in Sereno (1998) that uses the deeply nested, well-founded sauropod species Saltasaurus loricatus. |
Potential Synonomy | Theriopoda (Ray Lankester 1888, spelling variant) |
Active Phylogenetic Definition | |
Active Definition |
The most inclusive clade containing Passer domesticus (Linnaeus 1758) but not Saltasaurus loricatus Bonaparte and Powell 1980.
|
Shorthand |
> Passer domesticus but not Saltasaurus loricatus. |
Definitional Author |
Sereno 2005 |
Definition Status | Unknown |
Definition Type | STEM |
Node-Stem Triplet | NO |
Other Triplet Taxa | |
Specifiers | |
Specifier(s) A |
Passer domesticus |
Specifier(s) B | |
Specifier(s) C |
Saltasaurus loricatus
|
Qualifiers | |
+Taxon | |
-Taxon | |
Datum | |
Taxonomic Content | |
Publication Year |
Unknown Unknown Unknown 1986 |
Inactive Taxon Status | |
Rejection Criteria | |
Critique | |
Definitional History #1 | |
Earliest Record | Birds and all saurischians that are closer to birds than they are to sauropodomorphs. |
Latest Record | Gauthier 1986:18 |
Range (My) | |
Range (My) |
birds, sauropodomorphs |
Range (My) |
Definitional History #2 | |
Earliest Record | Birds and all other theropods more closely related to birds than to Sauropodomorpha, such as Plateosaurus and Diplodocus. |
Latest Record | Currie 1997:731 |
Range (My) | |
Range (My) |
birds, Plateosaurus, Diplodocus |
Range (My) |
Definitional History #3 | |
Earliest Record | All saurischians closer to Neornithes than to Saltasaurus. |
Latest Record | Sereno 1998:64 |
Range (My) | |
Range (My) |
Neornithes, Saltasaurus |
Range (My) |
Definitional History #4 | |
Earliest Record | All Saurischia closer to Neornithes than to Cetiosaurus. |
Latest Record | Padian et al. 1999:70 |
Range (My) | |
Range (My) |
Neornithes, Cetiosaurus |
Range (My) |
Definitional History #5 | |
Earliest Record | Aves and all saurischian dinosaurs more closely related to Aves than Sauropodomorpha. |
Latest Record | Clarke 2004:18 |
Range (My) | |
Range (My) |
Aves, Sauropodomorpha |
Range (My) |
Definitional History #6 | |
Earliest Record | All taxa closer to Passer domesticus than to Cetiosaurus oxoniensis. |
Latest Record | Holtz and Osmólska 2004:22 |
Range (My) | |
Range (My) |
Passer domesticus, Cetiosaurus oxoniensis |
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) |