Squaliformes is an order of Selachii. There are 137 species of Squaliformes, in 23 genera and 7 families. It includes groups like Dalatiidae, Etmopteridae, and Somniosidae.
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.)