Where: King George Island, Antarctica (62.2° S, 58.5° W: paleocoordinates 62.1° S, 61.4° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Petrified Forest Member (Arctowski Cove Formation), Early/Lower Eocene to Early/Lower Eocene (55.8 - 23.0 Ma)
Environment/lithology: fluvial; conglomeratic sandstone and claystone
• Fresh-water sediments (clays, sandstones, conglomerates) with plant remains and brown-coal seams (Petrified Forest Member, maximum 30-50 m thick) occur as fill of an erosional channel cut into undelying andesite lavas. Lahar-type (debris-flow) coarse to very coarse andesite-basalt agglomerate passing to fanglomerate, sometimes with thin lava flows (Skua Cliff Member: 6-24 m), unconformably overlies either the Hala Member or the Petrified Forest Member (Birkenmajer, 1980).
Size class: microfossils
Preservation: original sporopollenin
Collected by Professor K. Birkenmajer in 1977-1978
Collection methods: chemical,
Primary reference: L. Stuchlik. 1981. Tertiary pollen spectra from the Ezcurra Inlet Group of Admiralty Bay, King George Island (South Shetland Islands, Antartica). In K. Birkenmajer (ed.), Studia Geologica Polonica (LXXII)109-131 [C. Jaramillo/C. Jaramillo/C. Jaramillo]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 167920: authorized by Carlos Jaramillo, entered by Carlos Jaramillo on 07.04.2015
Creative Commons license: CC BY (attribution)
Taxonomic list
• Most of the taxons are classified into higuer units of the natural system, except for some spores of unknown botanical affinity, which are being classified according to morphographical system of Krutzsch (1959, 1962, 1967). The nomenclature of some sporomorphs may be subject to changes as a result of more detailed studies of other Tertiary sediments from Antarctica.
Show authors, comments, and common names
unclassified |
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Concavisporites |
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Pteridopsida |
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Polypodiaceoisporites "sp. 1", Polypodiaceoisporites "sp. 2", Ischyosporites cf. asolidus, Ischyosporites "sp. 1", Ischyosporites "sp. 2", Leiotriletes wolffi, Leiotriletes cf. triangulatoides, Leiotriletes "sp. 1", Leiotriletes "sp. 2", Leiotriletes "sp. 3", Leiotriletes "sp. 4", Foveasporis areapunctatis
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Polypodiopsida |
Polypodiales - Polypodiidae |
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- Polypodiaceae |
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Punctatisporites |
- |
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Ginkgoopsida |
Ephedrales - |
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Angiospermae |
Fagales - Nothofagaceae |
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Rosales - Rhamnaceae |
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Gunnerales - |
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Poales - Poaceae |
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