Does anyone have a ballpark figure for the amount of time it takes one species to evolve into or diversify into another?
I am working on a shark fauna that comes from the Coniacian, and one of the genera is only known from one species that
was found in the Santonian (Scindocorax novimexicanus). This site is one to two million years older, and the species is definitely
a part of the Scindocorax genus. This is only the second occurrence of this anocoracid reported from New Mexico, and although the
teeth compare with that described from the Santonian, I'm wondering if the age difference would indicate a separate species.
The Scindocorax novimexicanus photo is a lingual view of a left anterior tooth, while the Scindocorax sp. photo is a labial view
of a left lateral tooth.
Thanks!