👉 The term "carboniferous" refers to a geological period in which certain organisms were able to survive and thrive on the Earth's surface. This period occurred during the middle of the Paleozoic Era, approximately 435 million years ago. During this period, many organisms lived on the Earth's surface as part of the Cambrian Period, which lasted from about 542 to 486 million years ago. The Cambrian was characterized by the appearance and evolution of some