National Park Service

Occlusal enamel complexity in beaver (Rodentia: Castoridae) genera from John Day Fossil Beds National Monument, Oregon, USA

Abstract Dental adaptations to abrasive wear include increased tooth crown height and complexity of occlusal enamel folds. These trends have been studied extensively in ungulates, and some other mammal groups with hypsodont dentition. Beavers (family Castoridae) represent diverse...

Diversity and disparity in mammalian fossil assemblages of the John Day Formation, Oregon, USA

Abstract The John Day Formation offers a remarkably complete terrestrial record of Eocene-, Oligocene-, and Miocene-aged mammalian faunas in central Oregon. Sites in the John Day Formation have yielded numerous mammalian species spanning across many taxonomic orders, offering a u...

Needle in a Forest: Searching for Thresholds to Maximize Coexistence Between People and Wildlife in a Remote Wilderness Park

Managers of protected areas are charged with providing public access and enjoyment while minimizing wildlife disturbance, a difficult feat given that wild animals often respond to humans as predators. Evaluating the effects of people on wildlife is critical to inform management a...