Amphibians and nonmarine turtles from the Miocene Calvert Formation of Delaware, Maryland, and Virginia (USA)

R. E. Weems, and R. A. George

2001

Article

Journal of Paleontology 87(4):570-588

Find it at:

http://dx.doi.org/10.1666/12-071

Taxa discussed in this work:

• Chrysemys isoni
• Notophthalmus robustus

Taxonomy:

• Notophthalmus robustus belongs to Notophthalmus - Estes (1963)
• Notophthalmus belongs to Salamandridae - Weems and George (2001)
• Chrysemys isoni belongs to Chrysemys - Weems and George (2001)