GSC 102 Lecture Notes - Lecture 3: Feathered Dinosaur, Tyrannosaurus, Central Atlantic Magmatic Province
10 May 2017
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11/2/2016 3:24:00 pm: triassic (252-201 million years ago, first period of the mesozoic, amphibians made it thru the permian-triassic extinction event, early triassic the temnospondyls gave rise to genus triadobatrachus (in. Madagascar: aka proto-frog, evolution of the modern frog, lystrosaurus is a dicynodont (a type of synapsid) which survived the pt. Seaway, salt and gypsum began to accumulate: salt, under high pressure, tends to flow. It is also low in density compared to other rocks, so it tends to push up through newer sediments and form salt domes: as salt domes rise up, they form bulges in the overlying sediment. Oil and gas float to the top of these bulges: bone wars (edward drinker cope vs. othniel charles marsh, one of the key locations of the bone wars was the morrison. Scelidosaurus: stegosaurus (150-155 ma) is representative of the low browsing herbivores of the jurassic.
