geol final exam Flashcards
K-pg mas extinction
first period of Cenozoic. K is cretaceous
adaptive radiation
the evolution of many new species across large areas of eath
chicxulub crater
depression in earths crust off the coast of mexico dated 66 ma
glass ejecta
superheated quatrz that turns into glass
iridium anomaly
platinum group metal that is scarce on earth
deccan traps
large igneous province that erupted 66 ma
Cenozoic era
age of mammals 3 periods… paleognene, negoene, quaternary
paleogene
paleocene - eocene - Oligocene
neogene
milocene - pilocene
quaternary
pleistocene - holocene
ungulate mammals
hoofed mammals that are separated in two groups (artiodacts even toes) (perissodacts odd toes)
bovids
even toes ungulates that specialize in living in Savannah
tusks
modified teeth
prosimians
a primitive primate that evolved in the early paleogene
ape
a derived primate that lacks a tail
australopithecines
upright walking ape, of south africa
Lucy
Australopithecines afarensis 3 to 4 million year ago, Ethiopia
Homo Erectus
a derived human ancestor that evolved at approximately 2 million years ago
ancestral traits
primitive traits shared by many different members of a taxonomic group
derivied
unique and newly developed trait that is found in a limited number of related taxa
AOH
african orgin hyptheis - multiple waves of hormininns dispersing from africa beggiing with homo erectus
upper Paleolithic
archeological period of human prehistory that characterized by a number of material, cultural inovations
