NEET BIOLOGY

Detailed explanation-1: -Geologists use trilobites in a variety of ways to help them understand how the Earth has developed. One use is in the relative dating and stratigraphical correlation of sedimentary rock successions, especially in rocks of Cambrian and early Ordovician age.

Detailed explanation-2: -Ecology: Most trilobites lived in fairly shallow water and were benthic. They walked on the bottom, and probably fed on detritus. A few, like the agnostids, may have been pelagic, floating in the water column and feeding on plankton. Cambrian and Ordovician trilobites generally lived in shallow water.

Detailed explanation-3: -Fossils document the existence of now-extinct species, showing that different organisms have lived on Earth during different periods of the planet’s history. They can also help scientists reconstruct the evolutionary histories of present-day species.

Detailed explanation-4: -Because trilobites had wide diversity and an easily fossilized exoskeleton, they left an extensive fossil record. The study of their fossils has facilitated important contributions to biostratigraphy, paleontology, evolutionary biology, and plate tectonics.