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Re: And the Largest Theropod Is....




Mickey Mortimer wrote:

Spinosaurus aegyptiacus Stromer 1915
(IPHG 1912 VIII 19, destroyed) (~17.4 m, 12-19 tons) maxillary fragment,
incomplete dentary, nineteen teeth, two incomplete cervical vertebrae, seven
dorsal vertebrae (190-210 mm), dorsal ribs, gastralia, eight caudal centra
(MNHN SAM 124) (~15.9 m, 9-15 tons) (skull ~2 m) partial premaxillae,
partial maxillae, vomers, dentary fragment (Taquet and Russell 1998)

The largest named theropod, and probably the largest known.

Did Stromer provide linear measurements for *all* the elements, including the cranial material? This could be important, because (as I'm sure you know) the association of all this material into a single species has been questioned. Oliver Rauhut, for one, has suggested that the holotype for _S. aegyptiacus_ is a composite. But, if the dentary and vertebrae both come from a stupendously-sized theropod, it would bolster the case that the holotype probably represents one individual, and therefore a single species. While it is possible that two 17m-long theropods might turn up in one site, it must be rated as highly unlikely.



P.S. Nice work, Mickey.

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