Question

What is evidence from fossils?

Answer 1

An imprint or the preserved remnants of a once-living organism is referred to as a fossil. Bones are by far the most frequent form of fossil. Shells, exoskeletons, hairs, skin impressions, and even petrified wood may all be used to create fossils. Animal footprints, tracks, trails, and even animal burrows have all been known to become petrified. However, not all bone pieces qualify as fossils; a specimen must be older than 10,000 years to be considered a fossil.

Complete answer:
From an evolutionary standpoint, fossils are significant because they offer crucial facts and insights about a creature and how it lived. Dinosaurs, for example, died out millions of years ago, and studying their anatomy through their fossil remains is one of the finest methods to do it. Because certain creatures, like jellyfish, lack hard components like bones, fossils of these organisms are exceedingly rare. However, given the appropriate climatic circumstances, the bodies of these creatures can become fossilized. Soft-fossils leave an imprint of their bodies on the rock and are referred to as "soft-fossils."

Fossils can develop in one of the following five ways:-
- Natural Cast
- Amber Fossils
- Preserved Remains
- Trace Fossils
- Permineralization

Thus, Fossil records provide insight into living at a certain historical period. It also reveals how extinct and living creatures are connected.

Note: The term "subfossil" refers to remains such as bones, nests, or defecations that have not completed the fossilization process, either because the time since the animal was alive was too short (less than 10,000 years) or because the conditions in which the remains were buried were not ideal for fossilization. Subfossils are frequently discovered in caves or other protected areas, where they can survive for thousands of years.