Pristiophoriformes is an order of modern sharks. There are 8 species of Pristiophoriformes, in 2 genera and 1 family. It includes groups like Saw Sharks.
Definition: overall repetitive or reflective pattern in the body of one individual of this taxon. eg: bilateral symmetry, rotational symmetry, radial symmetry
Definition: Component found in mineralized skeletal tissue, (a specialized form of biogenic tissue in which the extracellular matrix is mineralized, and which functions in mechanical and structural support.)