ERTH 2401 Study Guide - Comprehensive Final Exam Guide - Dinosaur, Fossil, Triassic
Welcome to the ancient world: dinosaurs were around during end of triassic period, through the jurassic period and. Late proterozoic: 600 mya: one large supercontinent, no land mass over north pole. Late jurassic: 150 mya: continents are separated, early cretaceous: 120 mya, continent separation separating dinosaur herds of north america from south america, south america still connected to africa. Ice sheet reached pass the great lakes: great lakes formed by the ice caps, modern day. Ice sheets have shrunk from melting: sea levels are rising but still have ice left, planet is not static, it is dynamic and changed dramatically over time. No because they are just a soft mass, nothing hard. But found imprint of jellyfish in limestone in germany, the jellyfish died on soft (cid:373)udd(cid:455) o(cid:272)ea(cid:374) floor, lea(cid:448)i(cid:374)g a(cid:374) i(cid:373)pri(cid:374)t. so e(cid:448)e(cid:374) if do(cid:374)"t fossilize (cid:272)a(cid:374) still leave an imprint: about 10% have been discovered.