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Artist's restoration of Nigersaurus taqueti.
Artist's restoration of Nigersaurus taqueti.

Nigersaurus (meaning "

Republic of Niger
. Fossils of this dinosaur were first described in 1976, but it was only named in 1999 after further and more complete remains were found and described. The genus contains a single species, Nigersaurus taqueti.

Nigersaurus was 9 m (30 ft) long, which is small for a

keratinous sheath. Unlike other tetrapods
, the tooth-bearing bones of its jaws were rotated transversely relative to the rest of the skull, so that all of its teeth were located far to the front.

Nigersaurus was probably a

)