Cambrian Period (Noun)
Meaning
From 544 million to about 500 million years ago; marine invertebrates.
Classification
Nouns denoting time and temporal relations.
Examples
- The Cambrian Period, which occurred from 544 million to 500 million years ago, is known for the rapid evolution of life on Earth and the diversification of marine invertebrates.
- Fossil records from the Cambrian Period reveal a wide range of marine invertebrates, including sponges, cnidarians, and mollusks.
- During the Cambrian Period, the earliest fish-like vertebrates emerged, characterized by rudimentary fins and a notochord.
- The Cambrian Period was marked by an explosion of evolutionary innovation, giving rise to the major animal groups, including arthropods, echinoderms, and chordates.
- Cambrian Period rocks provide valuable insights into the development of the Earth's oceans and the evolution of marine ecosystems during a critical period in the Earth's history.