Fossils and Geological Eras

Fossils are the preserved remains or traces of animals, plants and other organisms from the remote past. They provide the most evident proof of evolution.

For 17280 years, the number of half-life (n) = 3 Cⁿ = (1/2)ⁿ= (1/2)³ = 1/8 1/8 of 200 mg = 25 mg So, after 17280 years, the amount of C-14 in the sample will be reduced to 25 mg.

 During Cretaceous period of the mesozoic era, the toothed birds became extinct.

Radiocarbon dating measures the decay of Carbon-14 in organic materials to determine the age of fossils and archaeological artifacts.

The Appalachian Mountains were primarily formed during the Paleozoic Era, specifically during the Alleghenian orogeny. This mountain-building event occurred as the supercontinent Pangea was assembled.

The correct chronological order of the five epochs of the Tertiary period (now Paleogene and Neogene) is Palaeocene, Eocene, Oligocene, Miocene, and Pliocene.

Ginkgo biloba is a gymnospermic plant. It is also known as living fossil because it has a great fossil history.

These species do not occur in the same geological period.

These species do not occur in the same geological period.

It is correct because the plants are still found and have very less taxonomic diversity.

The Hoatzin bird is often referred to as a living fossil due to its unique evolutionary characteristics that resemble ancient avian ancestors, such as claws on its wings as a chick.

Dead and decayed organisms which are buried under the earth form coal.

'Devonian period' was the age of fishes.

Dodo has recently become extinct from Mauritius.It was a bird and became extinct due to distruction of its habitat by man.

The fossil Archaeopteryx is the connecting link between reptiles and birds.