Fossil - the preserved remains or traces of an organism that lived in the past, usually more than 10,000 years ago, Mold Fossil - type of organism that forms when sediments bury an organism and the sediments change into rock , Petrified Fossil - Type of fossil that forms when minerals soak into the buried remains, replacing the remains, and changing them into rock, Carbonized Fossil - Type of fossil when organisms or parts are pressed between layers of soft mud or clay that hardens squeezing almost all the decaying organism away leaving the carbon imprint in the rock, Relative Age - Comparing the age of one object to the age of another object,

Earth History Matching

Leaderboard

Visual style

Options

Switch template

Continue editing: ?