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Annotated skull diagram of Spinosaurus. Spinosaurid skulls—similar in many respects to those of crocodilians—were long, low and narrow. [17] As in other theropods, various fenestrae (openings) in the skull aided in reducing its weight. In spinosaurs however, the antorbital fenestrae were greatly reduced, akin to those of crocodilians. [30]
Annotated diagram of the reconstructed skull Annotated diagram of the reconstructed skull muscles of Spinosaurus. Its skull had a narrow snout filled with straight conical teeth that lacked serrations. There were six or seven teeth on each side of the very front of the upper jaw, in the premaxillae, and another twelve in both maxillae behind ...
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Spinosaurus: Francisco Bruñén (2019) and Ibrahim et al. (2020) Oxalaia: Kellner et al. (2014) for Oxalaia's remains, most of anatomy based on Spinosaurus via Ibrahim et al. (2020) Suchomimus: Francisco Bruñén (2019) Baryonyx: Scott Hartman (2018) Ichthyovenator: Alexander Vieira (2020) (sources for that skeletal in description).
Diagram illustrating skull elements from Irritator (bottom) and other spinosaurids, comparing the relative positions of the external nares, or bony nostrils, (labeled e.n.) In 1998, Sereno and colleagues defined two subfamilies within the Spinosauridae based on craniodental (skull and tooth) characteristics.
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 ...
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.
Labeled skull diagram of the related and possibly synonymus Spinosaurus In 2017, a phylogenetic analysis by the Brazilian palaeontologists Marcos Sales and Cesar Schultz concluded that Oxalaia was more closely related to African spinosaurines than to Brazilian spinosaurines like Angaturama , as indicated by a wider snout and the lack of a ...