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HomeClass Notes1,200,000CA670,000

EPSC 233 Lecture Notes - Lecture 23: C4 Carbon Fixation, Double Fertilization, Oligocene

63 views5 pages
ambermallard57
6 Nov 2018
School
McGill University
Department
Earth & Planetary Sciences
Course
EPSC 233
Professor
Galen P Halverson

For unlimited access to Class Notes, a Class+ subscription is required.

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Lecture'24
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Document Summary

Both seed and a food supply for the seed. Grasses gained growth due to the development of continuous growth. Many went extinct during pleistocene from northern hemisphere glaciation and human predation. Monotremes (egg-laying mammals): poor fossil record, appear to have distinct evolutionary history from mammals. Marsupials: give birth to live, but embryonic young. Placentals: amnion fuses with walls of uterus, providing for development of young before birth. Put predator and prey out in the open. Hands evolved into extra bone in their limbs, causing them to run faster. Perissodactyla include horses, for which there is a super fossil record (north america) showing complex diversification. Specialized stomach in which they ferment their food (mostly grass) in order to extract nutrients during digestion. Generates large amounts of methane which is burped into the atmosphere. Significant impact on global methane levels: climate change. Primates first appeared by the paleocene (possibly earlier) Order carnivora originated in paleocene; varied specialized adaptations (teeth, speed, etc. )

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