fossils Flashcards
fossil
any remains or trace for a formerly living thing preserved by natural processes
petrified fossils
a fossil that has been transformed into stone through a process called petrification.
cast fossil
made when minerals fill up the space left by decayed organisms reating a solid copy of the organism
molds
a hollow sediment that preserves the shape and texture of a dead organisms but not the organism itself.
trace fossils
fossilized evidence of an animals trace rather than its body.
microfossils
a fossil or fossil fragment that can be seen only with a microscope
amber fossils
fossilized tree resin that contain organisms ussually insects.
ice fossils
a frozen organism that has been preserved in ice or snow.
asphalt traps
areas where natural asphalt forms pools that trap animals and preserve their remains
paleontology
area of science that organizes and classifies fossils
index fossils
the remains of plants and animals that have egsisted only for a limited geological period