Daniel Fortier visited the UCMP for two weeks this summer, investigating the taxonomy of South American crocodilians — crocodiles, caymans, and gharials. Daniel is from Brazil, where crocodiles are fairly common. He is a Ph.D. student at the Universidade Federal Do Rio Grande Do Sul in Porto Alegre, and is spending the year at the University of Iowa, in Iowa City. He is using fossils and modern skeletal materials to learn about crocodilian evolutionary history, places of origin, dispersal routes, speciation, and extinction events.
During the Miocene (from about 23 to 5 million years ago), Columbia was home to great crocodilian diversity. The UCMP has the best collection of Columbian crocodilian fossils. “Actually,” says Daniel, the UCMP “is the only one with Columbian fossils.”
This is a fossil gharial skull. Gharials (also called gavials) are a group of crocodilians with long, narrow jaws. They lived in South America during the Miocene, but are now extinct in South America. Gharials still live in parts of India. Daniel is trying to learn more about their evolution, biogeography, and extinction.