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Subclade Archosauria: Avemetatarsalia to Neornithes 

Taxon Feedback
Taxon Sinraptoridae 
Nominal Author Currie and Zhao 1993 
2° Nominal Author  
Taxon Status active

Padian and Hutchinson (1997) provided the a stem-based definition for Sinraptoridae. Independently, Sereno (1998) presented what amounted to a first-order revision of the definition, adding three additional genera as external specifiers. Holtz et al. (2004) used a similar definition but only included a single external specifier (Carcharodontosaurus saharicus).

The active definition is a first-order revision of previous definitions that, like Holtz et al. (2004), restricts the external specifiers to a single nominal species for each of the other two subclades of Allosauroidea (Allosaurus fragilis, Carcharodontosaurus saharicus) and adds an avian specifier to ensure stability of content should Sinraptor prove more closely related to coelurosaurians than to other allosauroids.

Potential Synonomy  

Active Phylogenetic Definition Feedback
Active Definition The most inclusive clade containing Sinraptor dongi Currie and Zhao 1993 but not Allosaurus fragilis Marsh 1877, Carcharodontosaurus saharicus (Depéret and Savornin 1927), or Passer domesticus (Linnaeus 1758). 
Shorthand > Sinraptor dongi but not Allosaurus fragilis, Carcharodontosaurus saharicus, Passer domesticus
Definitional Author Sereno 2005 
Definition Status original
textual substitution
first-order revision
second-order revision
Definition Type node
Node-Stem Triplet yes
Other Triplet Taxa  
Specifier A Sinraptor dongi 
Specifier(s) B  
Specifier(s) C Allosaurus fragilis, Carcharodontosaurus saharicus, Passer domesticus 
Taxonomic Content stem (entirely extinct)
crown (extant-bounded)
mixed (extant/extinct-bounded)
Publication Year 1997 

Inactive Taxon Status Feedback
Rejection Criteria junior synonym
historically polyphyletic
incomplete definition
no definition

Current Age Range Feedback
Earliest Record Pliensbachian (195 Ma) 
Latest Record Kimmeridgian-Tithonian (151 Ma) 
Range (My) 44 
Basis for Range The earliest record is tentatively given as Pliensbachian (Early Jurassic), the earliest recorded age for an allosauroid (Cryolophosaurus), given that Sinraptoridae is a stem-based taxon. The latest record is considered to be Kimmeridgian-Tithonian based on Allosaurus fragilis. Dates are rounded to the nearest million, the earliest from the beginning of the stage and the latest from the Kimmeridgian-Tithonian boundary (Gradstein et al. 2004). 

Definitional History #1
Definition 1 Sinraptor and all Allosauroidea closer to it than to Allosaurus
Author Padian and Hutchinson 1997:7 
Type node  stem 
Specifiers Sinraptor, Allosaurus 

Definitional History #2
Definition 2 All allosauroids closer to Sinraptor than to either Allosaurus, Monolophosaurus, Cryolophosaurus, or Carcharodontosaurus
Author Sereno 1998:64 
Type node  stem 
Specifiers Sinraptor, Allosaurus, Monolophosaurus, Cryolophosaurus, Carcharodontosaurus 

Definitional History #3
Definition 3 Sinraptor dongi and all taxa sharing a more recent common ancestor with it than with Allosaurus fragilis or Carcharodontosaurus saharicus
Author Holtz et al. 2004:102 
Type node  stem 
Specifiers Allosaurus fragilis, Sinraptor dongi, Carcharodontosaurus saharicus