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Why do fossils change?
Fossils can change due to a variety of reasons such as erosion, pressure, and chemical reactions. Over time, the original organic material may be replaced by minerals, leading to changes in composition. Factors like temperature and moisture levels in the environment can also contribute to fossil alteration.
What can changes in the fossils of a single organism over time reveal?
how the species evolved
What organism has fossils that show it has changed little over time?
One example of an organism that has fossils showing little change over time is the horseshoe crab. Fossils of horseshoe crabs from millions of years ago closely resemble the horseshoe crabs we see today, indicating that their body plan has remained relatively unchanged. This phenomenon is often referred to as "living fossils."
What are the remnants of living things buried in sediment called?
Over time, any remains of living things in sediment may slowly harden and change into fossils trapped in the rock.
Has the environment where the cynognathus fossil was found change over time?
Yes, the environment where the Cynognathus fossil was found has changed over time. Cynognathus fossils have been found in rock formations that were once part of ancient floodplains and river systems, indicating a different environment from what exists today. The shifting of tectonic plates and changes in climate have altered the landscape where these fossils are now found.
