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Q.18. During which period did the first trilobites appear? a) Cambrian b) Devonian c) Silurian d) Ordovician
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Q.18. During which period did the first trilobites appear?

a) Cambrian
b) Devonian
c) Silurian
d) Ordovician

User Chrischu
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6 votes

Answer:

A. Cambrian period

Hope this helps :)

User Tim Sparg
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7 votes

Answer:

a) cambrian

Step-by-step explanation:

The first body fossils of trilobites appeared in the Early Cambrian Period, about 540 million years ago.

User SeanVDH
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