Fossil chapter Flashcards

1
Q

requirements for fossil preservation

A

hard parts, rapid burial

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2
Q

rapid burial

A

dies, decays, buried, sediment; starts to compact

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3
Q

fossil

A

remains of trace of past life; preserved components of sedimentary

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4
Q

types of preservation

A

unaltered skeleton, petrification/ permineralization,

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5
Q

petrification/ permineralization,

A

wood and bone, pores filed with quartz, light materials becomes much heavier

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6
Q

fossil bone is?

A

heavy

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7
Q

why is fossil bone heavy?

A

because it is filled

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8
Q

replacement

A

pyrite and quartz, atom of atom replacement, molds and casts

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9
Q

is replacement common?

A

yes

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10
Q

mold

A

shell dissolved away

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11
Q

cast

A

space filled with sediment

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12
Q

is exceptional preservation common?

A

no

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13
Q

exceptional preservation

A

most of organism preserved- including soft parts

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14
Q

types of exceptional preservation

A

mummification, freezing, amber

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15
Q

fossil types

A

body fossil, chemical fossil, trace fossil

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16
Q

body fossil

A

skeleton

17
Q

trace fossil

A

tracks, burrows, records the behavior of organism, example: corprolites

18
Q

chemical fossil

A

chlorophyll

19
Q

classification of fossils

A

skeletal morphology

20
Q

types of classification of fossils

A

symmetry, and coiling