07169 - Nicely Preserved 0.81 Inch Onnia sp Ordovician Trilobite Prognathodon anceps The basin has a so

The basin has a so great continuity in its stratigraphic record that both the Upper Cretaceous as well as the two first epochs of the Paleogene (Paleocene and Eocene) can be studied

Environments: offshore

A review of Dyrosaurus phosphaticus (Thomas

Eremiasaurus heterodontus

Family MOSASAURIDAE Gervais

07169 - Nicely Preserved 0.81 Inch Onnia sp Ordovician Trilobite Prognathodon anceps The basin has a soOnnia sp, Bancroft 1933 (trilobite) Trilobita Asaphida Trinucleidae Parent taxon: Trinucleidae according to P. A. Jell and J. M. Adrain 2002 See also Sepkoski 2002 Ecology: fast moving low level epifaunal suspension feeder Age range: 460. 9 to 443. 7 Ma