In Persian Yauna was the generic term for Greeks.'
Frere), the English generic name for members of the mendicant religious orders.
The generic term is derived from the Arabic Ouaran,.
So long as the characters of new fossils are only of specific and generic value, it is mostly possible to assign the birds to their proper place, but when these characters indicate new families or orders, for instance Hesperornithes, Ichthyornithes, Palaelodi, their owners are put outside the more tersely constructed classifications applicable to modern birds.
Individual, specific and generic variations are frequent.