caption website birth_place citizenship thesis_title influences birth_date known_for residence image article_title name alma_mater
donald , central colorado , 2008 prothero , in the troublesome formation near kremmling http://www.donaldprothero.com/ glendale , california american medial isochroneity of mammalian biostratigraphic events oligocene magnetostratigraphy and mammalian biostratigraphy : testing the malcolm mckenna 21 february 1954 mammalian paleontology united states protherophoto1.jpg donald prothero
 donald prothero university of california , riverside , columbia university
donald prothero

donald ross prothero -lrb- february 21 , 1954 -rrb- is an american paleontologist , geologist , and author who specializes in mammalian paleontology .
his research has been in the field of magnetostratigraphy , a technique to date rock layers of the cenozoic era and its use to date the climate changes which occurred 30-40 million years ago .
he is currently the author or editor of more than 30 books and over 250 scientific papers , including five geology textbooks .
stephen jay gould cited prothero 's research on the lack of response to climate change in mammals from the eocene , oligocene and pleistocene epochs to support the punctuated equilibrium model of evolution .
he called prothero `` the best punctuated equilibrium researcher on the west coast '' .
