||Dinosaurs lived during the Triassic,
Jurassic, or Cretaceous period. Look in rocks
of this age.
||Sedimentary rocks are best. Fossils in igneous
or metamorphic rocks are largely destroyed.
||Rocks deposited on land, by rivers, or in shallow
seas are most apt to contain fossils.
||Bedrock exposures that are commonly found in
cutbanks of rivers, mountains, or deserts are
||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.
||Other possible dinosaur-bearing formations include
the non-marine to shallow marine Cretaceous rocks
of the Yukon-Koyuk and Kuskokwim sedimentary basins.