Earth Dates Flashcards by Jose Brambila

Q

Earliest known plant fossil

A

425 mya

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Q

Banded iron formations

A

2.2-2.8 bya

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Q

Tetrads present in fossil record

A

1.1 bya

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Q

Importance of tetrads

A

evidence of sexual reproducing protists

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Q

Oldest eukaryotic cell

A

2.1 bya

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Q

Evidence of oxygen-yeilding photosynthesis

A

3.5 bya

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Q

Oldest known fossil - prokaryotes (Cyanobacteria)

A

3.5 bya

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Q

Importance of banded iron formations

A

Evidence of widespread free oxygen.

-possibly released by photosynthesis

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Q

Fossils of modern Homo sapiens

A

30-50 kya

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Q

Earth formation

A

4.5 bya

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Q

Earliest known multicellular animal fossil

A

600mya

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