Q. Trilobites were evolved during which of the following periods?
A) Silurian
B) Cambrian
C) Ordovician
D) Precambrian
Explanation
The origin of trilobites is considered about 505-510 millions of years ago during Cambrian period. They became extinct in Permian period.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.