题库 Science 题目列表 Which of the following fossils is the oldest:
Single Choice
Which of the following fossils is the oldest:
A.

trilobite

B.

snake

C.

petrified wood

D.

megalodon tooth

E.

fossil of the earliest flowering plant

F.

fossilized frog’s egg

G.

trilobite

H.

mastodon

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