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Spinosauridae (or spinosaurids) is a clade or family of tetanuran theropod dinosaurs comprising ten to seventeen known genera. Spinosaurid fossils have been recovered worldwide, including Africa, Europe, South America and Asia. Their remains have generally been attributed to the Early to Mid Cretaceous. Spinosaurids were large bipedal carnivores.
Annotated skull diagram of the related Spinosaurus. In 2006, Thai biologist Komsorn Lauprasert examined fossils collected from the Phu Kradung, Sao Khua, and Khok Kruat Formations. In this study, the teeth of Siamosaurus and a Moroccan spinosaurid were compared to those of crocodilians using scanning electron microscopy.
This diagram was created with Inkscape. Based on sketch from dal Sasso, C.; ... "New information on the skull of the enigmatic theropod Spinosaurus, ...
[40] [13] As spinosaurids, Irritator and Angaturama are placed within the superfamily Megalosauroidea, with Spinosauridae being a possible sister taxon to the Megalosauridae. [40] Diagram illustrating skull elements from Irritator (bottom) and other spinosaurids, comparing the relative positions of the external nares, or bony nostrils, (labeled ...
The narrow head of Suchomimus was perched on a short neck, and its forelimbs were powerfully built, bearing a giant claw on each thumb. Along the midline of the animal's back ran a low dorsal sail, built from the long neural spines of its vertebrae. Like other spinosaurids, it likely had a diet of fish,such as eels, rays and smaller aquatic ...
Based on skeletal material from related spinosaurids, the skull of Oxalaia would have been an estimated 1.35 metres (4.4 feet) long; [5] this is smaller than Spinosaurus 's skull, which was approximated at 1.75 m (5 ft 9 in) long by Italian palaeontologist Cristiano Dal Sasso and colleagues in 2005. [20]
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Articles related to the Spinosauridae, a clade or family of tetanuran theropod dinosaurs comprising ten to seventeen known genera.Spinosaurid fossils have been recovered worldwide, including Africa, Europe, South America and Asia.