Fossil types by Riley Anderson https://padlet.com/rileyanderson/9zhu9pp6p4yt Made with joy en-us 2018-11-08 18:37:01 UTC 2025-04-24 12:33:44 UTC hello@padlet.com Mold rileyanderson https://padlet.com/rileyanderson/9zhu9pp6p4yt/wish/302250568 When an animal, plant, or other organism dies and is covered by sediment, its flesh decays and bones deteriorate due to chemical reactions, and a cavity remains below the ground surface.]]> 2018-11-08 18:37:50 UTC https://padlet.com/rileyanderson/9zhu9pp6p4yt/wish/302250568 cast rileyanderson https://padlet.com/rileyanderson/9zhu9pp6p4yt/wish/302253076 Minerals gradually enter into the cavity, resulting in a cast, also called a mold fossil, which is in the general form of the original organism.]]> 2018-11-08 18:41:24 UTC https://padlet.com/rileyanderson/9zhu9pp6p4yt/wish/302253076 preserved/original remains rileyanderson https://padlet.com/rileyanderson/9zhu9pp6p4yt/wish/302255355 Most fossils are hardened animal remains such as shells, bones, and teeth. Minerals replace the remains, forming a fossil of the hard skeletal body parts. Other fossils are impressions or other evidence of an organism preserved in rock.]]> 2018-11-08 18:44:46 UTC https://padlet.com/rileyanderson/9zhu9pp6p4yt/wish/302255355 mineralized/petrified rileyanderson https://padlet.com/rileyanderson/9zhu9pp6p4yt/wish/302256846 This occurs when the pores of the plant materials, bones, and shells are impregnated by mineral matter from the ground, lakes, or ocean. ... Petrification occurs when the organic matter is completely replaced by minerals and the fossil is turned to stone.]]> 2018-11-08 18:46:17 UTC https://padlet.com/rileyanderson/9zhu9pp6p4yt/wish/302256846 trace rileyanderson https://padlet.com/rileyanderson/9zhu9pp6p4yt/wish/302258531 A fossil of a footprint, trail, burrow, or other trace of an animal rather than of the animal itself.]]> 2018-11-08 18:48:24 UTC https://padlet.com/rileyanderson/9zhu9pp6p4yt/wish/302258531 carbon film rileyanderson https://padlet.com/rileyanderson/9zhu9pp6p4yt/wish/302259551 A carbonaceous film or carbon film is an organism outline of a fossil]]> 2018-11-08 18:49:48 UTC https://padlet.com/rileyanderson/9zhu9pp6p4yt/wish/302259551 Index fossils rileyanderson https://padlet.com/rileyanderson/9zhu9pp6p4yt/wish/306480233 1.) An organism that lived only for a short part of earth's history.

2.) The fossils must be found over a wide area of earth.

3.) Many fossils of that organism have to be found all over the world]]> 2018-11-20 18:31:39 UTC https://padlet.com/rileyanderson/9zhu9pp6p4yt/wish/306480233