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GEOL 1003 (10)
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Lecture

Mesozoic Era Notes

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Department
Geology
Course
GEOL 1003
Professor
All Professors
Semester
Fall

Description
Mesozoic EraPermian mass extinction allowed very few surviving organisms Recovery slow at firstTriassic Biota mollusks hexacorals replace spongealgae coral modern framework builders colonialsolitary marine reptiles frogs turtles flying reptiles first mammals early dinosaurs Dinosauromorphs group of reptiles that survived the Permian ME some dines walked on fours some on two dino difference shape of skull and highly developed teeth early dinos smaller than the gigantic jurassic onesOcean life Bivalves most abundant ammonoids index fossil brachiopods urchinsPelagic life phytoplankton dinoflagellates protists calcareous nanoplankton chalk conodonts stsolely Triassic ray finned fish sharks marine reptiles 1 nothosaurs early crocs lchthyosaur resembling dolphins placodonts plesiosaursLandforms golcondaterraneaccretionarywedgefromthesonomaprogenysuturedlandPlant life gymnosperms conifers ginkos cycadscycadeiods resemble
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