Many scientists call the Cambrian Explosion an 'evolutionary arms-race' to account for such a fast radiation. The adaptations that arose in the Cambrian were mainly for protection and predation. If one animal evolved a hard exoskeleton, another would have to evolve better predation strategies to survive.
Cambrian explosion, the unparalleled emergence of organisms between 541 million and approximately 530 million years ago at the beginning of the Cambrian Period. The beginning of the Cambrian Period is marked by the evolution of hard body parts such as calcium carbonate shells
This period lasted about 53 million years and marked a dramatic burst of evolutionary changes in life on Earth, known as the "Cambrian Explosion." Among the animals that evolved during this period were the chordates — animals with a dorsal nerve cord; hard-bodied brachiopods, which resembled clams; and arthropods
All animal evolution for the last half billion years has come from tinkering with these Cambrian body plans. The Cambrian Explosion: For most of the nearly 4 billion years that life has existed on Earth, evolution produced little beyond bacteria, plankton, and multi-celled algae
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Many scientists call the Cambrian Explosion an 'evolutionary arms-race' to account for such a fast radiation. The adaptations that arose in the Cambrian were mainly for protection and predation. If one animal evolved a hard exoskeleton, another would have to evolve better predation strategies to survive.
Cambrian explosion, the unparalleled emergence of organisms between 541 million and approximately 530 million years ago at the beginning of the Cambrian Period. The beginning of the Cambrian Period is marked by the evolution of hard body parts such as calcium carbonate shells
This period lasted about 53 million years and marked a dramatic burst of evolutionary changes in life on Earth, known as the "Cambrian Explosion." Among the animals that evolved during this period were the chordates — animals with a dorsal nerve cord; hard-bodied brachiopods, which resembled clams; and arthropods
All animal evolution for the last half billion years has come from tinkering with these Cambrian body plans. The Cambrian Explosion: For most of the nearly 4 billion years that life has existed on Earth, evolution produced little beyond bacteria, plankton, and multi-celled algae
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