HONORS 232 Lecture 13: Lecture 13 Notes
Document Summary
Lecture thirteen: fossils can be classified as, trace i. e. footprints, which can be as old as 3 ma for bipeds b. Impressions i. e. feathers: mold/casts i. e. endocasts, bones and teeth, which are very mineral rich and therefore affected by minerals of water (how fast or how slow) i. Adaptation and speciation to exploit new environments: hominins and cheek pouch monkeys like baboons. Remain in or return to the forest (habitat tracking: sme hominoids, leaf monkeys iii. Extinction: most common, middle and late miocene taxa, earth"s history is nested into different periods of time, eons, era, periods, and epochs, and these are called the geological time scale, miocene: 23-5 ma. Orthograde (stable low back as seen in lumbar vertebrae) Expanded anterior palate showing wide canines: rounded molar cusps, but thick enamel is a derived trait i. High orbits and narrow interorbital distance: thick enamel and low molar cusps, robust canines, thick mandible, broad upper central incisors i. ii.
