Dinosaur tooth - Deltadromeus Agilis - 18 mm

Dinosaur tooth - Deltadromeus Agilis - 18 mm
Late Cretaceous (93 - 100 mil y) - Kem Kem formation, Marocco

Deltadromaeus Agilis tooth. Serrated and nicely coloured. Very good condition, 1.9 x 0.8 cm.

Deltadromaeus ('delta runner') is a genus of average sized therapod dinosaurs, belonging to the Neoceratosauria that lived during the Late Cretaceous in the area of present-day Morocco. The species is Deltadromaeus Agilis.

Discovery and naming

In 1996, the holotype (SGM-Din2) was found by Paul Sereno in a Moroccan delta called the Kem Kem region, in a stratum of the Kem Kem layers that stem from the Cenomanian. The specimen consists of a partial skeleton without a skull. Preserved were: a partial neck rib; two vertebra arches of the front dorsal vertebra, two ribs, two stomach ribs; twenty-three tail vertebra; eight chevrons; the top of a shoulder blade; a partial coraoid, a partial upper humerus; the top of a radius and ulna, a partial ilium; parts of the ischium; the femur; a partial tibia and fibula; a part of the talus bone; the calcaneum and bones in the feet. Sereno also thought he had found the bottom of a pubic bone, but that later appeared to be the bottom of a ischium. On the other hand, some bone fragments that had not been identified by Sereno were regarded as possible pubic bone parts.

A second specimen (IPHG 1912 VIII) was originally described as a member of the Bahariasaurus genus by Ernst Stromer, but Sereno recognised it as a Deltadromeus in 1996. It consists of a coraoid and parts of the pelvis and a hind leg. Other researchers deny that some elements of this last specimen belong to Deltadromeus.

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