Diversity and extinction of tropical American mollusks and emergence of the Isthmus of Panamav. 260No. 51141624–1626
Jackson, Jeremy B. C., Jung, Peter, Coates, Anthony G., and Collins, Laurel S. 1993. "Diversity and extinction of tropical American mollusks and emergence of the Isthmus of Panama." Science, 260, (5114) 1624–1626.