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What are the major classes within the subphylum trilobites?

User Arun Tyagi
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Final answer:

The major class within the subphylum Trilobita is Class Trilobita. Trilobites were diverse and widespread during the Paleozoic era. Their fossils are used to determine relative ages of rocks.

Step-by-step explanation:

The major class within the subphylum Trilobita is Class Trilobita. Trilobites are extinct arthropods that lived during the Paleozoic era. They were among the most well-known fossils and had three major body sections: cephalon, thorax, and pygidium. Trilobites were diverse and widespread, and their fossils are used to provide relative ages of rocks.

User Molten Ice
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