noun a proper noun referring to a specific geological period in Earth's history, known for the diversification of life forms
article a determiner used before a noun to specify or limit it
The Cambrian period is a major division of geologic time, spanning from approximately 541 to 485 million years ago.
The Cambrian explosion, a rapid diversification of multicellular life forms, is a key event in the history of life on Earth.
Fossils from the Cambrian period provide important insights into the early evolution of life on Earth.
The Cambrian period is characterized by distinctive rock layers and sedimentary deposits that can be used for dating and correlation.
The distribution of ancient organisms during the Cambrian period can shed light on past continental configurations and climate patterns.
The Cambrian period is often referenced in science fiction and fantasy writing to describe an ancient or prehistoric era.
Geologists may refer to the Cambrian period when studying rock formations and sedimentary layers to understand Earth's history.
Biologists frequently study the Cambrian period to learn about the early evolution of life on Earth and the emergence of complex organisms.
Paleontologists focus on the Cambrian period to study the fossil record and understand the diversity of life forms that existed during that time.
Historians may reference the Cambrian period when discussing the ancient history of the Earth and the development of early civilizations.