Fossils formed when the sediment surrounding a buried organism hardens. When the organism decays, its impression is left in the rock and can be seen if the rock is broken open. Found on http://www.scientificpsychic.com/etc/geology-glossary.html
Fossils formed when the sediment surrounding a buried organism hardens. When the organism decays, its impression is left in the rock and can be seen if the rock is broken open. Found on http://www.ucmp.berkeley.edu/glossary/gloss2geol.html
Fossils formed when the sediment surrounding a buried organism hardens. When the organism decays, its impression is left in the rock and can be seen if the rock is broken open. Found on http://www.ucmp.berkeley.edu/glossary/glossary_2.html