fossils Flashcards
the empty cavity found in sedimentary rocks, takes shape of the organism was buried
molds
when a mold is filled with sand, mud, or minerals which later hardens into the space of what was buried
cast
fossilized waste materials from an animal
corpolites
impression left in soft sediment or mud
imprints
mummification, freezing
preservation of an organism
amber and tar beds
preservation of an organism
the replacement of an organism with minerals
petrifaction
evidence or marks left by once living organisms
trace fossils
fossil formation
buried quickly, decay slowly
fossils?
the remains or evidence of a plant or animal, usually found in sedimentary rocks
why do fossils help?
follows path of evolution
why do fossils help?
shows how earths surface has changed
gives clues to ancient climates
why do fossils help?
index fossils
a fossil of an organism that lived for only a short period of time, helps with the dating of rocks
finds the relative ages of rocks
why do fossils help?
