Jurassic, Pleistocene, Precambrian. The named times in Earth’s history might inspire mental images of dinosaurs, trilobites, or other enigmatic animals unlike anything in our modern world. Labels like ...

What are some events that all of us have had in our lives? Ask the class "What are some events that all of us have had in our lives?" Make a list of 5 or 6 things on the board. Let’s organize these!

During this time, collection visits will be available by appointment and other special access requests will be considered on a case-by-case basis. Please email [email protected] for more ...

Humans have walked the Earth for 190,000 years, a mere blip in Earth's 4.5-billion-year history. A lot has happened in that time. Earth formed and oxygen levels rose in the foundational years of the ...

Nature, 184, 1310 (Oct. 24, 1959). Kulp, J. L., Program 1959 Annual Meeting, Geol. Soc. America (Nov. 2, 1959). Holmes, A. (personal communication, Oct. 6, 1959 ...