I like to use a meter stick and be very intentional with my spacing to model time as a scale. I also avoid using the ... a ruler to space years accordingly. An Index fossil is any animal or plant ...

The beginning and end of each chunk of time in the geologic time scale is determined by when some species appeared or disappeared from the fossil record. When many species went extinct around the same ...

The age of the fossil must be determined so it can be compared to other fossil species from the same time period ... relative ages of geological events preserved in the rock record.

earliest stage of the fossil in the geologic time scale earliestEpochOrLowestSeries: earliest epoch of the fossil in the geologic time scale latestAgeOrHighestStage: latest stage of the fossil in the ...

As a result, teeth are the most abundant elements in the primate fossil record. Fortunately, paleontologists can use tooth morphology to identify species fairly accurately. Deep, geologic time is ...