Home > Preview
The flashcards below were created by user
on FreezingBlue Flashcards.
A order of arrangment of rock layers by reltive age
a unit of geologic time that includes two or more periods
a unit of geologic time that is longer than an epoch but shorter than an era
a subdivison of geologic time that is longer than an age but shorter than and period
the process of change by which new species develop from preexisting species over time
the interval of time in geologic time scale from earths fromation
the geologic era that followed precambrian time and that lasted ftom 542 million to 251 million years ago
an episode during which large numbers of species became extinct
the geologic era tha last from 251 to 65.5 million years ago
cenozoic era the current geoglic era which began 65.5 million years ago
What would you like to do?
Home > Flashcards > Print Preview