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SCIENCE > Geologic Time Review > Flashcards

Geologic Time Review Flashcards

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Biology 101 flashcards
1
Q

CAMBRIAN

A

-1st of invertebrates appears

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2
Q

ORDOVICIAN

A

-fish appear

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3
Q

DEVONIAN

A

-predatory fish

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4
Q

PERMIAN

A

-mass extinction

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5
Q

STROMATOLITES

A

-earliest known fossils
-first life
-produced oxygen

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6
Q

PRECAMBRIAN

A

-earliest eon of earths history

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7
Q

OLDEST ROCK

A

-4.2 billion years

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8
Q

1st living organisms to evolve

A

-bacteria

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9
Q

IDEX FOSSIL OF EARLY PALEZOIC

A

-trilobite

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10
Q

DOMINANT LIFE FORM (cenizoic)

A

-mammals

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11
Q

DOMINANT LIFE FORM (mesozoic)

A

-reptiles

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12
Q

BEGINNING OF (palezoic) ERA MARKED BY…

A

-fossils

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SCIENCE (3 decks)

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