The History of Life The record and origin of life.
History of Life Part 3. Proterozoic Eon 2.5 bya – 543 mya stable continents first appear Most life are Bacteria and Archaeans first evidence of oxygen.
Lecture 3 – Mammalian Diversity: Mesozoic Mammals & Monotremes Luo et al., (2002). Node labeled 1 indicates our (stable) clade-based definition of Mammalia.
Who Wants to be a Genius? Final Exam Review. _________ are the longest subdivisions of geologic time. 1.Eons 2.Periods 3.Eras 4.Epochs.
Meirba Asencio. What’s Mesozoic Mesozoic means “middle animals” in Greek It’s made up of three time periods that span from 65 mya- 250mya A time.
The Mesozoic Era Geology 103. Key theme: Pangea breaks up Process will take 150 my and will extend into the Cenozoic Laurentia/Baltica and Australia/Antarctica.
Utah’s Geology & the History of the Earth Utah’s Geologic Past: Proterozoic to Mesozoic.
Unit 3: Evolution. How does the theory of evolution by natural selection demonstrate the scientific process? Science relies on evidence to explain observations.
Which of the following words describes change according to the principle of uniformitariansim? 1. Sudden 2. Rare 3. Global 4. Gradual.
How old is the earth? a. 5 billion years old b. 50 billion years old c. 1 billion years old d. 1 million years old.
Life in the Mesozoic (cont.) The Age of Dinosaurs.
Fossils Earth’s Beginning Age and Eras Classification.