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29 Cards in this Set

  • Front
  • Back
Time interval from formation of earth to present
geologic time
what we call animals and plants that have died off
extinct
change of living things over time
evolution
era the first mammals appeared in
mesozoic
the oldest era
pre cambarian
era that amphibians appeared
palezoic
era the earliest fish appeared
palezoic
the most current era
cenozoic
era when land plants and animals evolved
palezoic
era that earliest dinosaurs appeared
mesozoic
formed when less dense minerals floated to surface
crust and mantle
era humans appeared
cenozoic
the era in which humans evolved
cenozoic
estimated origin of earth
4.6 billion years ago
small units of geologic time
period
the supercontinent
pangea
ancient oceans
hot and freshwater
era in which dinosaurs were dominant
mesozoic
earliest organisms
bacteria
the era in which fish and trilobites dominant
palezoic
fossils from this era are very rare
pre cambarian
lizards snakes turtles
reptiles
special feature of primates
opposable thumbs
large units of geologic time
eras
traces of plants or animals in rocks
fossils
age of reptiles
mesozoic
more dense minerals sinking to earthe center formed this
inner core
adaptations and changes in living things over time
evolution
preserved remains of an organism
fossils