BIO 1130 Lecture Notes - Lecture 4: Macroevolution, Oviparity, Merocrine

• School: University of Ottawa
• Department: Biology
• Course: BIO 1130
• Professor: Jon Houseman

Document Summary

Began 65 million years ago and continues to the present. Current and most recent of the three phanerozoic eras (paleozoic, mesozoic) Known as the age of the mammals, due to the extinction of the many groups that were present during the earlier eras (ex. More than just the diversification and appearance of mammals; Birds appear and increase in numbers, insects and flowering plants change appearance of planet, swimming mammals, and chordate fish appear. Paleogene primates, rodents, whales, continents near present day formation, warming/drying. Neogene mountains, hominids, global ice age, early humans, modern humans. Continents take up configuration that we know today. Faunas of animals different in africa and na. Increase sa of wing with light weight structure that allows for sa that pushes against air for flight. Feather structure: because keratin is dead, need to maintain it o. Squeeze out oils to prime feathers: barbs are attached to each other by hooklets; this makes surface rigid o.