ANATOMY

Detailed explanation-1: -Fossils are the preserved remains of plants and animals whose bodies were buried in sediments, such as sand and mud, under ancient seas, lakes and rivers. Fossils also include any preserved trace of life that is typically more than 10 000 years old.

Detailed explanation-2: -Fossils are the preserved remains of ancient organisms. Animal fossils include: actual parts of the body, such as bones or an entire skeleton; traces left by the body, such as a trail of footprints.

Detailed explanation-3: -fossil, remnant, impression, or trace of an animal or plant of a past geologic age that has been preserved in Earth’s crust. The complex of data recorded in fossils worldwide-known as the fossil record-is the primary source of information about the history of life on Earth.

Detailed explanation-4: -Fossils: Fossils are preserved parts of dead organisms. This is the impression of once-living organisms on the earth. Examples of fossils are animal bones, shells, stone imprints, cast molds, etc.

Detailed explanation-5: -Rhyniognatha hirsti. Age: 400 million years. Tortotubus. Age: about 440 million – 445 million years. Metaspriggina. Age: about 505 million years. Redlichiida. Age: 525 million – 500 million. Pikaia. Age: 523 million years. “Seaweed-Like” Fossils. Stromatolites. Hematite Tubes.