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Spinosaurus anatomy exhibits another feature that may have a modern analogy: its long tail resembled that of the thresher shark, employed to slap the water to herd and stun shoals of fish before devouring them (Oliver and colleagues, 2013). The strategies that sailfish and thresher sharks employ against shoaling fish are more effective when the ...
[16] [17] In 1934, Stromer referred a partial skeleton also from the Bahariya Formation to a new species of Spinosaurus; [18] the specimen has since been alternatively assigned to another African spinosaurid, Sigilmassasaurus. [19] In 1983, a relatively complete skeleton was excavated from the Smokejacks pit in Surrey, England.
Spinosaurus differs from Oxalaia by its significantly more widely spaced tooth sockets, the presence of a slight narrowing between its third and fourth sockets, and the sharper slope of its snout. Oxalaia is currently assigned to the subfamily Spinosaurinae due to the morphology of its upper jaw and the absence of fine serrations on its teeth ...
The newest addition to the Field Museum on Chicago's lakefront will give visitors a glimpse of the largest predatory dinosaur yet discovered via a 46-foot (14.02 meter) cast of a Spinosaurus ...
Iberospinus (meaning "Iberian spine") is an extinct genus of spinosaurid dinosaur from the Early Cretaceous Papo Seco Formation of Portugal.The genus contains a single species, I. natarioi, known from several assorted bones belonging to one individual.
Neck reconstructions of Sigilmassasaurus (top) and Baryonyx. The validity of Sigilmassaurus, however, did not go unchallenged shortly after it was named.In 1996, Paul Sereno and colleagues described a Carcharodontosaurus skull (SGM-Din-1) from Morocco, as well as a neck vertebra (SGM-Din-3) which resembled that of "Spinosaurus B," which they therefore synonymized with Carcharodontosaurus. [11]
It also lacked the forward or backward inclination of Spinosaurus ' s neural spines. Its front corner formed a 3-centimetre (1.2 in) narrow-process, pointing upwards. The spine of the thirteenth dorsal vertebra has been only partly preserved; its upper and lower ends had broken off from taphonomic causes. From its general shape, the describers ...
Suchomimus itself was more adapted to a life hunting in shallow water due to its hollow bones, while Baryonyx and Spinosaurus were capable of fully submerging underwater and diving after prey. Courtesy of denser bones, the latter two spinosaurids could hunt underwater for prey and occupy a more derived lifestyle than Suchomimus could.