Seeking long-lived mammals, paleontologist finds two that lasted at least 23 million year
washingtonpost.com
In all of Earth’s history, which species of mammal survived for the longest time?
washingtonpost.com
In all of Earth’s history, which species of mammal survived for the longest time?

The Utah Geological Survey (UGS) is a division of the Utah Department of Natural Resources. Several specialized programs comprise the UGS: Data Management, Energy & Minerals, Geologic Hazards, Geologic Information & Outreach, Geologic Mapping, Groundwater & Wetlands, and Paleontology.

