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Many palaeontologists later questioned Buffetaut and Ingavat's identification of Siamosaurus, given that spinosaurid teeth, including many from Asia, have often been mistaken for those of aquatic reptiles like crocodilians, plesiosaurs, and ichthyosaurs. [43]
The teeth of spinosaurids were conical, with an oval to circular cross section and either absent or very fine serrations. Their teeth ranged from slightly recurved, such as those of Baryonyx and Suchomimus, to straight, such as those of Spinosaurus and Siamosaurus, and the crown was often ornamented with longitudinal grooves or ridges. [35] [38]
In 2020, a study of teeth from the Tendaguru Formation and from the Late Jurassic of South America again suggested a ceratosaurid identification for Ostafrikasaurus. [12] Another study published in the same year argued that the fragmentary tooth taxa Ostafrikasaurus and Siamosaurus should be regarded as nomina dubia. [13]
A tooth found with the bones belongs to Siamosaurus, but whether it is from the same individual or is evidence of scavenging remains uncertain.' I dont think that there's much more than that? Whats interesting is that it seems that a spinosaur ansestor must have existed which had tall spines as suchomimus, spinosaurus and now this one described ...
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Partial tooth of an indeterminate spinosaurid (KDC-PV-0003) and possible Siamosaurus tooth (GMNH-PV-999) from the Sebayashi Formation in the National Museum of Nature and Science, Tokyo Bivalvia indet.
Siamosaurus sp. – sp. should not be in italics. Yeah, realized I was accidentally doing that in multiple articles, looks like I missed one! Fixed. PσlєοGєєк ƧɊƲΔƦΣƉ 09:52, 28 June 2020 (UTC) A Siamosaurus tooth found nearby indicates the skeleton may belong to this genus, though this could also represent evidence of scavenging.
A more generalist diet has also been proposed for spinosaurs, based on fossils such as the bones of a juvenile iguanodontid that was also found in the same Baryonyx specimen, an "Irritator" tooth embedded in the vertebrae of a pterosaur, and tooth crowns from Siamosaurus that were found in association with sauropod dinosaur bones. It is thus ...