As adjectives the difference between eocene and ypresian
is that eocene is eocene while ypresian is (geology) of or pertaining to a geological epoch, the oldest age or lowest stratigraphic stage of the eocene.
As a proper noun ypresian is
(geology|paleontology) a subdivision of the eocene epoch.
eocene
Adjective
(
en adjective)
(geology) of a geologic epoch within the Paleogene period from about 56 to 34 million years ago.
See also
*
ypresian
Proper noun
(
en proper noun)
(geology, paleontology) A subdivision of the Eocene epoch
Adjective
(-)
(geology) Of or pertaining to a geological epoch, the oldest age or lowest stratigraphic stage of the Eocene.