As adjectives the difference between precambrian and mesozoic
is that precambrian is (informal|geology) relating to the time and geology dated before the phanerozoic while mesozoic is (geology) of a geologic era within the phanerozoic eon that comprises the triassic, jurassic and cretaceous periods from about 230 to 65 million years ago, when life on earth was dominated by reptiles.
As proper nouns the difference between precambrian and mesozoic
is that precambrian is the eon (or supereon) and rock formations dated before 5410±10 million years ago, coinciding with the first appearance of the fossils of hard-shelled animals while mesozoic is (geology) the mesozoic era.
precambrian
English
Adjective
(
wikipedia Precambrian)
(
-)
(informal, geology) Relating to the time and geology dated before the Phanerozoic
Proper noun
(
en proper noun)
The eon (or supereon) and rock formations dated before 541.0±1.0 million years ago, coinciding with the first appearance of the fossils of hard-shelled animals.
Usage notes
* The (International Commission on Stratigraphy), which attempts to standardize the vocabulary of the field, is revising the boundaries between time periods based on physical-science methods rather than the kinds of fossils present.
* The boundary between the Precambrian and the Phanerozoic has been changed from time to time and will be subject to change, as will the eons listed as Hyponyms below.
Synonyms
* (geological eon) Cryptozoic (archaic)
Coordinate terms
* (geological eon) Phanerozoic
Hyponyms
* (geological eon) Hadean, Archaean, Proterozoic - eons
mesozoic
Adjective
(
en adjective)
(geology) Of a geologic era within the Phanerozoic eon that comprises the Triassic, Jurassic and Cretaceous periods from about 230 to 65 million years ago, when life on earth was dominated by reptiles.
See also
*
