20558 - Finest Grade Unidentified Mosasaur Humerus, Ulna and Phalanx Limb Bones in Matrix Cretaceous Dinosaur Parent taxon: Phacopidae according to

Parent taxon: Phacopidae according to P

It still preserves a thin layer of the gravelly natural sediment in its surface

but not its neural spine and transverse processes

See also Sepkoski 2002

20558 - Finest Grade Unidentified Mosasaur Humerus, Ulna and Phalanx Limb Bones in Matrix Cretaceous Dinosaur Parent taxon: Phacopidae according toPrecious specimen preserved in its natural matrix. Not restored, glued or fabricated. This specimen has been stabilized on its surface by Paraloid B 72 to ensure its stability and consistency. This process does not affect neither the color nor any of the characteristics. It simply makes the specimen better preserved in the long term. Rare limb bones of an unidentified mosasaur species. The morphology of the humerus, Ulna and one phalanx can be