U1356 Unit XI 106R: Early/Lower Eocene, Antarctica
collected by IODP

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Gleichenidiites spp. microspore
Scabratisporis sp. microspore
Psilatricolpites spp. microspore
Psilabrevitricolporites sp. microspore Van der Kaars 1983
Psilastephanoporites sp. microspore Regali et al. 1974
Psilamonocolpites sp. microspore Van der Hammen and Garcia de Mutis 1966
Equisetopsida - Araucariaceae
Dilwynites granulatus microspore Harris 1965
Araucariacites spp. microspore
unclassified
? Alisporites tenuicorpus microspore
Podocarpidites sp./Alisporites tenuicorpus?
Angiospermae - Malvales - Bombacaceae
Bombacacidites informal sp. A microspore Couper 1960
Angiospermae - Fagales - Myricaceae
Myricipites harrisii microspore
Angiospermae - Fagales
Nothofagidites spp. microspore
Nothofagidites flemingii microspore Potonie 1960
Nothofagidites asperus microspore Cookson 1958
N. asperus complex
Nothofagidites lachlaniae microspore Pocknall and Mildenhall 1984
Angiospermae - Gunnerales
Tricolpites sp. microspore Couper 1953
Angiospermae - Proteales - Proteaceae
Proteacidites aff. reticuloscabratus microspore
Proteacidites annularis microspore
Proteacidites cf. callosus microspore
Proteacidites cf. callosus/P. cf. scaboratus
Proteacidites cf. crassus microspore
Proteacidites cf. ornatus microspore
Proteacidites cf. tuberculatus microspore
Proteacidites reticuloscabratus microspore
Proteacidites similis microspore
Proteacidites sp. microspore Cookson and Couper 1953
Proteacidites cf. subscabratus microspore Couper 1960
Proteacidites cf. amolosexinus microspore Dettmann and Playford 1968
Proteacidites cf. pseudomoides microspore Stover 1973
Proteacidites symphyonemoides microspore Cookson 1950
Proteacidites parvus microspore Cookson 1950
Triporopollenites sp. microspore Pflug and Thomson 1953
Triporopollenites cf. ambiguus microspore Couper 1973
Angiospermae - Poales - Poaceae
? Graminidites sp. microspore Potonie 1960
Angiospermae - Arecaceae
Arecipites spp. microspore
Magnoliopsida
Brevitricolpites sp. microspore González-Guzmán 1967
Malvacipollis spp. microspore
Psilatricolporites spp. microspore
Gambierina edwardsii microspore
Retitricolporites spp. microspore
Coniferales - Podocarpaceae
Podocarpidites spp. microspore
Dacrycarpites sp. microspore Cookson and Pike 1953
Phyllocladidites mawsonii microspore Cookson 1947
Microcachryidites antarticus microspore
Lycopodiopsida - Selaginellales
Camarozonosporites sp. microspore Potonié 1956
Densoisporites sp. microspore Dettmann 1963
Densoisporites sp./Cingulatisporites sp.
unclassified
Retitriporites sp. microspore Ramanujam 1966
Bryopsida
Stereisporites sp. microspore Pflug 1953
Stereisporites (Tripunctisporis) sp.
Polypodiopsida
? Punctatosporites sp. microspore Ibrahim 1933
Polypodiopsida - Osmundaceae
Baculatisporites spp. microspore
Baculatisporites spp./Osmundacidites spp.
Polypodiopsida - Polypodiaceae
Laevigatosporites spp. microspore
Pteridopsida
Ischyosporites sp. microspore Balme 1957
Ischyosporites sp./Cibotiidites sp.
Cyathidites spp. microspore
Granulatisporites sp. microspore Potonié and Kremp 1954
unclassified
Psilatriporites spp. microspore
Retistephanocolporites sp. microspore Van der Hammen and Wijmstra 1966
see common names

Geography
Country:Antarctica
Coordinates: 63.3° South, 136.0° East (view map)
Paleocoordinates:63.9° South, 132.7° East
Basis of coordinate:stated in text
Time
Period:Paleogene Epoch:Eocene
Stage:Ypresian 10 m.y. bin:Cenozoic 2
Key time interval:Early/Lower Eocene
Age range of interval:56.00000 - 47.80000 m.y. ago
Stratigraphy
Stratigraphy comments: The lowermost 110 meters of sediments recovered at IODP Site U1356 (895.5 to 1000.08 meters below sea floor [mbsf], lithostratigraphic Units X and XI) are dated as Early to Middle Eocene in age based on the integration of dinoflagellate cyst (dinocyst) biostratigraphy and magnetostratigraphy (Expedition 318 Scientists. Site U1356. in Escutia, C., Brinkhuis, H., Klaus, A., and the Expedition 318 Scientists. Proc. IODP 318 (2011)).
Lithology and environment
Primary lithology:bioturbation,green silty claystone
Secondary lithology: sandstone
Lithology description: Unit XI (Cores -101R to -106R; 948.8 to 1000.08 mbsf) consists predominantly of dark green, bioturbated claystone that is faintly stratified (millimetre- to meter-scale) as defined by colour variations (light to dark bands), and subordinate laminated siltstone and sandstone interbeds.
Environment:shallow subtidal indet.
Geology comments: Based on information from dinocyst assemblages, sediments of Units X and XI were deposited in mid-shelfal settings (Expedition 318 Scientists. Site U1356. in Escutia, C., Brinkhuis, H., Klaus, A., and the Expedition 318 Scientists. Proc. IODP 318 (2011)).
Taphonomy
Modes of preservation:original sporopollenin
Size of fossils:microfossils
Abundance in sediment:abundant
Collection methods and comments
Collection methods:core,chemical,hydrochloric,hydroflouric,survey of museum collection
Reason for describing collection:paleoecologic analysis
Collectors:IODP
Collection method comments: This research used samples and data provided by the Integrated Ocean Drilling Program (IODP).

A total of 145 palynological samples, taken from the Eocene interval of Site U1356 at a resolution of 20-30 cm, were processed using identical protocols at the Institute of Geosciences of Goethe University Frankfurt and the Laboratory of Palaeobotany and Palynology of Utrecht University.
Metadata
Database number:169275
Authorizer:C. Jaramillo Enterer:C. Jaramillo
Research group:micropaleontology
Created:2015-05-14 10:39:23 Last modified:2015-05-14 10:39:23
Access level:the public Released:2015-05-14 10:39:23
Creative Commons license:CC BY
Reference information

Primary reference:
55271.fossil record J. Pross, L. Contreras, P. K. Bijl, D. R. Greenwood, S. M. Bohaty, S. Schouten, J. A. Bendle, U. Röhl, L. Tauxe, J. I. Raine, C. E. Huck, T. Flierdt, S. S. R. Jamieson, C. E. Stickley, B. Schootbrugge, C. Escutia, H. Brinkhuis and Integrated Ocean Drilling Program. 2012. Persistent near-tropical warmth on the Antarctic continent during the early Eocene epoch. Nature (488)73-77 [C. Jaramillo/C. Jaramillo/M. Uhen]