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Transcript of Trace Fossils
Trace fossils are remains of the organism's activities such as footprints, borrows, nests and eaten plants.
"Trace Fossils." The Paleontology Portal. N.p., n.d. Web. 18 July 2015.
Brainhoney Notes from Origin and Evolution
"Trace Fossils." Palaeos.com. N.p., n.d. Web. 18 July 2015. <http://palaeos.com/paleontology/trace_fossils.html>.
Episode 14: Trace Fossils." Palaeocast. N.p., n.d. Web. 18 July 2015.
Characteristics of Trace Fossils:
depression in rock
evidence of behavior
found in sedimentary rock
Trace Fossils are found in sedimentary rocks. They are created in soft sediments and are preserved.
A type of trace fossil are invertebrate traces. They are mostly made in soft sediments like sand and mud. You can mostly find them in marine environments. The first known fossil occurrence is found in the Cambrian Period. The last known fossil occurrence was in the Quaternary Period.
Biological Evolution and Phylogeny:
Trace Fossils leave "traces" of trails, borrows, nests, etc. These tracks help scientists learn about the animals that left them. Their tracks reveal information about nature. Scientists can study how the animals have evolved and how nature has become different. It also shows how the organism interacted in the environment.
An American alligator makes a borrow in the ground. The alligator uses it as a den, similar to the distantly-related Cretaceous ornithopod dinosaur, Oryctodromeus cubicularis.
Evolution is the process of organisms developing over time. Organisms leave fossils behind. One type of fossil is the trace fossil. Trace fossils are trails.