The Paleozoic Era Began About How Many Million Years Ago

Q54: Trilobites lived during which era?<br>A) Paleozoic<br>B) Cenozoic<br>C)

Q55: The oldest evidence of life on Earth

Q56: The largest units of geologic time are

Q57: We live in the _ epoch.

Q58: Carbon dating was used to establish the

Q60: The largest units of geologic time are

Q61: The hollow depression left when a shell

Q62: The Cenozoic era consists of only two

Q63: The concept of uniformitarianism was developed by

Q64: A group of periods is called a(n)<br>A)