Asked by Hibatallah Ashraf on May 03, 2024
Verified
A major explosion of animal diversity in which all major marine lineages were formed took place during which period?
A) Cambrian
B) Carboniferous
C) Devonian
D) Permian
E) Proterozoic
Cambrian
A geological period approximately 541 million years ago, marked by a rapid diversification of life in the Earth's oceans.
Proterozoic
An eon in the geologic timescale, following the Archean and preceding the Phanerozoic, characterized by the first evidence of oxygen in the atmosphere and multicellular life.
- Detail the genetic ancestry and initial emergence of key animal phyla.
Verified Answer
KR
Kristal RiveraMay 08, 2024
Final Answer :
A
Explanation :
The Cambrian period, which occurred around 541 million years ago, is often referred to as the "Cambrian Explosion" because of the sudden appearance and rapid diversification of numerous animal phyla in the fossil record. This period saw the development of many of the major animal body plans, including arthropods, mollusks, and chordates.
Learning Objectives
- Detail the genetic ancestry and initial emergence of key animal phyla.