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Clade
Subclade

Taxon
Taxon
Spinosaurinae
Nominal Author
Stromer 1915
2nd Nominal Author
Sereno et al. 1998
Taxon Status ACTIVE
Comments
Sereno et al. (1998) was the first to use Spinosaurinae, and Holtz et al. (2004) were first to define it. The active definition is the reciprocol of the definition for Baryonychinae.
Potential Synonomy

Active Phylogenetic Definition
Active Definition
The most inclusive clade containing Spinosaurus aegypticus Stromer 1915 but not Baryonyx walkeri Charig and Milner 1986.
Shorthand
> Spinosaurus aegyptiacus but not Baryonyx walkeri.
Definitional Author
Holtz et al. 2004
Definition Status TEXTUAL SUBSTITUTION
Definition Type STEM
Node-Stem Triplet NO
Other Triplet Taxa
Specifiers
Specifier(s) A
Spinosaurus aegyptiacus
Specifier(s) B
Specifier(s) C
Baryonyx walkeri
Qualifiers
+Taxon
-Taxon
Datum
Taxonomic Content
Publication Year Unknown
Unknown
Unknown
2004

Inactive Taxon Status
Rejection Criteria
Critique
 

Definitional History #1
Earliest Record
Spinosaurus aegyptiacus and all taxa sharing a more recent common ancestor with it than with Baryonyx walkeri.
Latest Record
Holtz et al. 2004:98
Range (My)
Range (My)
Spinosaurus aegyptiacus, Baryonyx walkeri
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