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Thalassodromeus sethi DB
Thalassodromeus is a genus of pterosaur that lived in what is now Brazil during the Early Cretaceous period, about 100 million years ago. Thalassodromeus had one of the largest known skulls among pterosaurs, around 1.42 m (4 ft 8 in) long, with one of the proportionally largest cranial crests of any vertebrate. Though only the skull is known, the animal is estimated to have had a wing span of 4.2 to 4.5 m (14 to 15 ft). The crest was lightly built and ran from the tip of the upper jaw to beyond the back of the skull, ending in a unique V-shaped notch. The jaws were toothless, and had sharp upper and lower edges. Its skull had large nasoantorbital fenestrae (opening that combined the antorbital fenestra in front of the eye with the bony nostril), and part of its palate was concave. The lower jaw was blade-like, and may have turned slightly upwards.
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