| Requirements |
Explanation |
| Age: |
Dinosaurs lived during the Triassic,
Jurassic, or Cretaceous period. Look in rocks
of this age. |
| Rock
Type: |
Sedimentary rocks are best. Fossils in igneous
or metamorphic rocks are largely destroyed. |
| Environment
of Deposition: |
Rocks deposited on land, by rivers, or in shallow
seas are most apt to contain fossils. |
| Visibility: |
Bedrock exposures that are commonly found in
cutbanks of rivers, mountains, or deserts are
best. |
| Location: |
Find out where fossils have been found before.
The geologic map above shows three vertebrate
fossils that were found in a geologic unit (purple)
called the Peninsular Terrane. |
| In
Alaska: |
Other possible dinosaur-bearing formations include
the non-marine to shallow marine Cretaceous rocks
of the Yukon-Koyuk and Kuskokwim sedimentary basins. |
