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nounfrom 230 million to 63 million years ago
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of or relating to or denoting the Mesozoic era
Definition that contains mesozoic
- dinosaur any of numerous extinct terrestrial reptiles of the Mesozoic era
- jurassic of or relating to or denoting the second period of the Mesozoic era
- cretaceous of or relating to or denoting the third period of the Mesozoic era
- triassic of or relating to or denoting the first period of the Mesozoic era
- mesozoic of or relating to or denoting the Mesozoic era
- cordaitales extinct plants having tall arborescent trunks comparable to or more advanced than cycads; known from the Pennsylvanian period; probably extinct since the Mesozoic era
- order cycadales primitive tropical gymnosperms abundant in the Mesozoic, now reduced to a few scattered tropical forms
- cycadales primitive tropical gymnosperms abundant in the Mesozoic, now reduced to a few scattered tropical forms
- family belemnitidae family of extinct Mesozoic cephalopods
- ichthyosaur any of several marine reptiles of the Mesozoic having a body like a porpoise with dorsal and tail fins and paddle-shaped limbs