20769 - Top Rare 1.43 Inch Stephanodus sp Incisor Tooth in Jaw Bone Late Cretaceous Platecarpus ptychodon presumably due to a gradient

presumably due to a gradient in the amount of cement precipitated

Ecology: fast-moving nektonic carnivore

Diagnosis :

Ekwanoscutellum

13 teeth on a maxillary 16 teeth on a dentary

20769 - Top Rare 1.43 Inch Stephanodus sp Incisor Tooth in Jaw Bone Late Cretaceous Platecarpus ptychodon presumably due to a gradientRare species belonging to the Trigonodontoidae family. This type of specimens in the fossil record of the Upper Cretaceous phosphates of the Ouled Abdoun Basin are not common. Stephanodus sp, Zittel 1883 (ray finned fish) Osteichthyes Tetraodontiformes Trigonodontoidae Parent taxon: Trigonodontoidae according to G. R. Case and D. R. Schwimmer 1988 See also Kumar and Loyal 1987 Subtaxa: Stephanodus lybicus Ecology: nektonic carnivore Environments: