Ostafrikasaurus

Ostafrikasaurus was a carnivorous theropod dinosaur from the Late Jurassic of southeastern Tanzania. It is known only from a fossil tooth that is 49 mm (1.9 in) long. Paleontologist Eric Buffetaut claims it is the oldest evidence of a Spinosaurid dinosaur (a type of crocodile-like dinosaur that ate fish); It appeared 148 million years ago.

Ostafrikasaurus
Speculative restoration and holotype tooth
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Family:	Spinosauridae
Genus:	Ostafrikasaurus Buffetaut, 2012
Species:	O. crassiserratus
Binomial name
Ostafrikasaurus crassiserratus Buffetaut, 2012

Ostafrikasaurus Media

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  Werner Janensch during the Tendaguru expedition, 1910

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  Most of the teeth originally attributed to the same taxon as Ostafrikasaurus teeth are now believed to have represented Ceratosaurus (pictured) or a similar animal

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  Ostafrikasaurus_crassiserratus_by_PaleoGeek

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  Reconstructed skeleton of Baryonyx, a spinosaurid from the Early Cretaceous of western Europe

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  Tooth of the related genus Spinosaurus, Museo di Storia Naturale A. Stoppani, Lombardy

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  Possible spinosaurid tooth from the Middle Jurassic-aged Tiourarén Formation of Niger in multiple views (D1, D2, D3, D4), and a closeup of the serrations (D5)

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  Depiction of two Dicraeosaurus traversing tidal flats in the Tendaguru Formation

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  Palaeogeographic locations of spinosaurids (white) and the specimen of HB site (black), through time from Bajocian–Bathonian (A), Tithonian (B), Barremian−Aptian (C), and Albian−Cenomanian (D)