BIO 3102 Lecture 7: Lecture 7 notes.docx
Document Summary
Phanerozoic paleozoic: hadean (4. 600-3,800ma, 0-12th, archanean (3,800 2,500 ma 12th -33rd, proterozic (2,500-543ma, 33rd 63rd, phanterozic (543 ma to present time, top 9 floors) Cenozoic era (65 ma to present time) Invertebrate live in the water: going to see mulit cellularity in the oceans explode in the body plans. It was the beginning of multi cellular life for everything all the ones that made it and the ones that did not. History of invertebrates: burgess shales yoho national park. Early nineteen hundreds a family found the fossils after there had been a land slide and they were in the way of the horse trail. He got off his horse to move them so the horses would not trip. It turned out he was the expert at the time so he knew what he was looking at. When he found them and he said it is complete collection of the invertebrate in time and was not looked at again until 1980"s.
