Paleogene

[pey-lee-uh-jeen; especially Brit. pal-ee-]

Pa·le·o·gene

[pey-lee-uh-jeen; especially Brit. pal-ee-] Geology
adjective
1.
noting or pertaining to the earlier part of the Cenozoic Era, in the system adopted by some geologists, occurring from 65 to 25 million years ago and including the Oligocene, Eocene, and Paleocene epochs: corresponds to the earlier part of the Tertiary Period in the system generally used in the U.S. Compare Neogene.
noun
2.
the Paleogene Period or System.

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Paleogene is always a great word to know.
So is zedonk. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
the offspring of a zebra and a donkey.

Origin:
1880–85; < German Paläogen, equivalent to paläo- paleo- + -gen (< Greek genésthai to be born); compare -gen
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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American Heritage
Science Dictionary
Paleogene   (pā'lē-ə-jēn')  Pronunciation Key 
The oldest of two subdivisions of the Tertiary Period, including the Paleocene, Eocene, and Oligocene Epochs.
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