Answer :
D. Trilobites
Trilobites made their entrance onto the Earth's stage during the late Cambrian Period. This is the first and oldest division of the Paleozoic Era.
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D. Trilobites
Trilobites made their entrance onto the Earth's stage during the late Cambrian Period. This is the first and oldest division of the Paleozoic Era.
I would appreciate brainliest, if not that's ok!