Question

the fossil trilobite was originally by ? a. kholrabi, b. an invertebratec. c. reptile. d. an ave. no bakwaas. div unfollow kar bhai

Answer 1

The first appearance of trilobites in the fossil record defines the base of the Atdabanian stage of the early Cambrian period (521 million years ago) and they flourished through out the lower paeleozoic era before beginning  a drawn out decline to extinction when, during the Devonian all trilobite orders except the Proetids died out.    

Answer 2

HEY MATE HERE IS YOUR ANSWER:

FOSSIL Trilobite was originated by an invertebratec, So b. is right answer.

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