Chapter 9: Geology
Geology = study of earth systems Key terms: fossils, paleontology, taphonomy
How to become a fossil.
Difficult few become fossils and only a small proportion of those are discovered Biologic and geologic processes
PRIMATES: Chapter 7 & 8 Prosimians, Monkeys & Apes
Suite of traits
Ancestral traits: Generalized limbs Clavicle Pentadactyl Tail Generalized teeth (heterodont) Derived traits: Opposable thumb, big toe Nails Emphasis on vision, decreased olfaction
Chapter 9 continued.
The Mesozoic Era (225-65mya)
"Age of the Reptiles"
Dinosaurs rule the earth
Mammalian evolution begins
Small, insect-eating Similar to monotremes Jurassic first marsupial and placental mammals Diversific
Chapter 9 in textbook
Estimation of fossil age Techniques fall under 3 main categories:
Relative dating use stratigraphy Calibrated relative dating compares relative date to absolute time scale Chronometric (Abso