Sharks Arose from Early Jawed Fishes Midway Through the __________

Question

Sharks arose from early jawed fishes midway through the __________ period.
A)Devonian
B)Mississippian
C)Permian
D)Triassic
E)Cambrian

Accepted Answer

Sharks are believed to have evolved from early jawed fishes called placoderms during the Devonian period, which lasted from 419.2 to 358.9 million years ago. This is supported by the earliest known shark-like fossil, Cladoselache, which dates back to the Devonian period.