The taxonomy and morphology of the Miocene moles of eastern Oregon is well understood, but their paleoecology has not been fully resolved. It has been observed that through the Miocene, Oregon talpids decreased in diversity (number of genera and minimum number of individuals) while shifting ecologically. We explored the hypothesis of a link between faunal and environmental change using both published (MIOMAP) and museum data on talpid diversity for the northern Great Basin from the early Barstovian (~16 Ma) through the late late Hemphillian (~5 Ma). We analyzed faunal data for changes in relative abundance, evenness, rarefied number of species, and variations in habitat use.
The results of this research were presented at the annual meeting of the Society of Vertebrate Paleontology in Bristol (2009).
Collaborator: Edward Davis
- Habitat preferences in the fossil record (jonathancalede.wordpress.com)