palynology and micropaleo Flashcards
interdisciplinary science between geology and biology, particulary on botany
palynology
forms the exine of pollens and sporoderm of the spores and which consists in extremely resistant biological polymers
sporopollenin
most abundant fossil of terrestrial origanisms
spores and pollens
classified on laesurae
spores
a spore with 3 laesurae
trilete
a spore with one laesurae
monolete
classified on colpation or sulcation, male gametes produced by plants
pollen grains
age of earliest gymnosperm
late devonian
age of earliest angiosperm
early cretaceous
group of unicellular protists that are recognized by their golden brown chloroplasts (15-100 μm)
dinoflagellates
are defined as small, organic-walled microfossils of unknown biological affinity
acritarchs
large (50-200 μm) flask shaped palynomorphs
chitinozoa
unicellular microorganism with shells/tests mainly made up of calcium carbonate
foraminifera
temporary extensions on the surface of a microorganism
pseudopods
free floating foraminifer, in the upper 200 m water column, early jurassic
planktonic
bottom dwelling forams, early cambrian
benthic