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Of, relating to, or being the era of geologic time from about 251 to 66 million years ago. The Mesozoic Era includes the Triassic, Jurassic, and Cretaceous Periods and is characterized by the development of flying reptiles, birds, and flowering plants and by the appearance and extinction of dinosaurs. See Table at geologic time.
The Mesozoic Era.
(Geological Science) of, denoting, or relating to an era of geological time that began 250 000 000 years ago with the Triassic period and lasted about 185 000 000 years until the end of the Cretaceous period
(Geological Science) the Mesozoic the Mesozoic era
Mes•o•zo•ic(ˌmɛz əˈzoʊ ɪk, ˌmɛs-, ˌmi zə-, -sə-)
1. noting or pertaining to a geologic era occurring between 230 million and 65 million years ago, characterized by the appearance of flowering plants and by dinosaurs.n.
2. the Mesozoic Era or group of systems.
The era of geologic time from about 245 to 65 million years ago. The Mesozoic Era was characterized by the development of flowering plants and by the appearance and extinction of dinosaurs. See Chart at geologic time.
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|Noun||1.||Mesozoic - from 230 million to 63 million years ago|
Cretaceous, Cretaceous period - from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants
|Adj.||1.||Mesozoic - of or relating to or denoting the Mesozoic era|