The oldest known fossils are
A)trilobites and brachiopods.
B)algae and bacteria.
C)fungi and algae.
D)worms and jellyfish.

Question

Quizplus · Accepted Answer

The oldest known fossils are of algae and bacteria, dating back to approximately 3.5 billion years ago. Trilobites and brachiopods are relatively young in comparison, appearing in the fossil record around 500 million years ago. Fungi and jellyfish also appear later in the fossil record, around 450 million years ago. Worms have diversified throughout the history of life on Earth and appear in the fossil record at various times.

The Oldest Known Fossils Are