Answer: Classification: Trilobite
Geologic time period: Ordovician
The best classification of the fossil is Trilobite and the geologic time period during which the organism that produces Trilobite exists is Ordovician.
Trilobites are the extinct fossil arthropods that had a distinctive three-lobed, three-segmented form. They appeared in the Cambrian Period about 572 years ago and dominated the sea during this time.
The Ordovician Period, in geologic time, the second period of the Paleozoic Era. It began after the Cambrian period. Therefore the correct match is Trilobite and the Ordovician period.
Therefore the correct option is D.
Learn more about Trilobite here:
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