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Baryonyx-like teeth are also found from the earlier Hauterivian and later Aptian sediments of Spain, as well as the Hauterivian of England. [21] [61] Baryonychines were represented in Africa, with Suchomimus tenerensis and Cristatusaurus lapparenti as well as Baryonyx-like teeth from the Aptian of Niger.
Baryonyx (/ ˌ b ær i ˈ ɒ n ɪ k s /) is a genus of theropod dinosaur which lived in the Barremian stage of the Early Cretaceous period, about 130–125 million years ago.The first skeleton was discovered in 1983 in the Smokejack Clay Pit, of Surrey, England, in sediments of the Weald Clay Formation, and became the holotype specimen of Baryonyx walkeri, named by palaeontologists Alan J ...
Baryonyx was about 7.5 m (25 ft) long and weighed 1.2 t (1.3 short tons). It had a long, low snout and narrow jaws, which have been compared to those of a gharial. Baryonyx had many finely serrated teeth. It had robust forelimbs, with the eponymous first-finger claw measuring about 31 cm (12 in) long.
Baryonychinae is an extinct clade or subfamily of spinosaurids from the Early Cretaceous (Valanginian-Albian) of Britain, Portugal, and Niger.The clade was named by Charig & Milner in 1986 and defined by Sereno et al. in 1998 and Holtz et al. in 2004 as all taxa more closely related to Baryonyx walkeri than to Spinosaurus aegyptiacus.
Some theropods, such as Baryonyx, Lourinhanosaurus, ornithomimosaurs, and birds, are known to use gastroliths, or gizzard-stones. The majority of theropod teeth are blade-like, with serration on the edges, [14] called ziphodont. Others are pachydont or folidont depending on the shape of the tooth or denticles. [14]
Spinosaurus (/ ˌ s p aɪ n ə ˈ s ɔːr ə s /; lit. ' spine lizard ') is a genus of spinosaurid dinosaur that lived in what now is North Africa during the Cenomanian stage of the Late Cretaceous period, about 100 to 94 million years ago.
Iguanodon (/ ɪ ˈ ɡ w ɑː n ə d ɒ n / i-GWAH-nə-don; meaning 'iguana-tooth'), named in 1825, is a genus of iguanodontian dinosaur.While many species found worldwide have been classified in the genus Iguanodon, dating from the Late Jurassic to Early Cretaceous, taxonomic revision in the early 21st century has defined Iguanodon to be based on one well-substantiated species: I ...