palynology and micropaleo Flashcards

(42 cards)

1
Q

interdisciplinary science between geology and biology, particulary on botany

A

palynology

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2
Q

forms the exine of pollens and sporoderm of the spores and which consists in extremely resistant biological polymers

A

sporopollenin

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3
Q

most abundant fossil of terrestrial origanisms

A

spores and pollens

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4
Q

classified on laesurae

A

spores

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5
Q

a spore with 3 laesurae

A

trilete

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6
Q

a spore with one laesurae

A

monolete

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7
Q

classified on colpation or sulcation, male gametes produced by plants

A

pollen grains

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8
Q

age of earliest gymnosperm

A

late devonian

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9
Q

age of earliest angiosperm

A

early cretaceous

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10
Q

group of unicellular protists that are recognized by their golden brown chloroplasts (15-100 μm)

A

dinoflagellates

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11
Q

are defined as small, organic-walled microfossils of unknown biological affinity

A

acritarchs

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12
Q

large (50-200 μm) flask shaped palynomorphs

A

chitinozoa

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13
Q

unicellular microorganism with shells/tests mainly made up of calcium carbonate

A

foraminifera

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14
Q

temporary extensions on the surface of a microorganism

A

pseudopods

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15
Q

free floating foraminifer, in the upper 200 m water column, early jurassic

A

planktonic

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16
Q

bottom dwelling forams, early cambrian

A

benthic

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17
Q

single-celled phytoplanktons that live in the upper layers of ocean, surrounded by atleast 30 microscopic plating of carbonates (cocolith)

A

cocolithophores

18
Q

individual carbonate platelet or ring screted by cocolithophores

19
Q

resting or dormant resting cell of dinoflagellate

20
Q

when dinoflagellates reproduce rapidly

21
Q

siliceous microfossils

22
Q

single most important group of oceanic primary producers, early jurassic

A

diatoms (greek “diatomos” meaning “cut in two”)

23
Q

fine-grained higly siliceous rock rich in diatom’s remains called frustules

24
Q

open ocean, silica-secreting, zooplanktons
unique feature: central capsule - divides into endoplasma and ectoplasma
early cambrian

25
planktonic marine chromists that are both photosynthetic and heterotrophic, early creataceous
silicoflagellate "golden algae"
26
tests: built from organic matter and mineral cemented together by an organic calcareous cement
agglutinated
27
tests: made up of calcium carbonate or aragonite
calcareous
28
tests: calcareous wall whose shells have a clear or translucent appearance with tiny pores
hyaline
29
tests: composed of microscopic needles formed insed the foram and moved outside of the cell
porcelaneous
30
tests: made of tightly packed grains of calcium carbonate, but with no obvious cement
microgranular
31
tests: pore diameter less than 1 μm
micro perforate
32
tests: pore around 1-3 μm
finely perforate
33
tests: pores greater than 3 μm
macro-perforate
34
benthic forams on the surface
epibenthos
35
benthic forams buried in the surface
endobenthos
36
benthic: 0-1 cm depth in the sediments
epifaunal
37
benthic: 1-2 cm depth in the sediments
shallow infaunal
38
benthic: 2-3 cm depth in the sediments
intermediate infaunal
39
benthic: 3-15 cm depth in the sediments
deep infaunal
40
microorganism that swim or go against the currents
nektonic
41
study of the past climates
paleoclimatology
42
extent of heat driven reactions that alter the composition of organic matter
thermal maturation