U1356 Unit XI 104R: Early/Lower Eocene, Antarctica
collected by IODP

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Assamiapollenites cf. incognitus microspore
Baculatisporis sp. microspore
Battenipollis sectilis microspore
Bluffopollis scabratus microspore
Gleichenidiites spp. microspore
Scabratisporis sp. microspore
Retitriporites sp. microspore Ramanujam 1966
Psilatricolpites spp. microspore
Psilabrevitricolporites sp. microspore Van der Kaars 1983
Psilamonocolpites sp. microspore Van der Hammen and Garcia de Mutis 1966
Retitricolpites spp. microspore
Equisetopsida - Araucariaceae
Araucariacites spp. microspore
Dilwynites granulatus microspore Harris 1965
Angiospermae - Malvales - Bombacaceae
Bombacacidites informal sp. A microspore Couper 1960
? Bombacacidites informal protocostatus microspore
Angiospermae - Fagales - Myricaceae
Myricipites harrisii microspore
Angiospermae - Fagales
Nothofagidites cf. emarcidus microspore
N cf. emarcidus complex
Nothofagidites spp. microspore
Nothofagidites lachlaniae microspore Pocknall and Mildenhall 1984
N. lachlaniae complex
Nothofagidites cf. waipawaensis microspore Romero 1973
Nothofagidites flemingii microspore Potonie 1960
N. flemingii complex
Nothofagidites asperus microspore Cookson 1958
N. asperus complex
Angiospermae - Fabales - Fabaceae
Margocolporites sp. microspore Ramanajuan 1966
Angiospermae - Gunnerales
Tricolpites sp. microspore Couper 1953
Angiospermae - Proteales - Proteaceae
Beaupreaidites informal orbiculatus type microspore
Triporopollenites sp. microspore Pflug and Thomson 1953
Triporopollenites informal sp.1 microspore Pflug and Thomson 1953
Proteacidites informal constrictus microspore
Proteacidites aff. reticuloscabratus microspore
Proteacidites annularis microspore
Proteacidites cf. adenanthoides microspore
Proteacidites cf. callosus microspore
Proteacidites cf. callosus/P. cf. scaboratus
Proteacidites cf. crassus microspore
Proteacidites cf. incurvatus microspore
Proteacidites cf. incurvatus/P. cf. granoratus
Proteacidites cf. ornatus microspore
Proteacidites cf. spiniferus microspore
Proteacidites cf. tuberculatus microspore
Proteacidites reticuloscabratus microspore
Proteacidites similis microspore
Proteacidites sp. microspore Cookson and Couper 1953
Proteacidites informal sp. 6 microspore Cookson and Couper 1953
Proteacidites parvus microspore Cookson 1950
Proteacidites cf. subscabratus microspore Couper 1960
Proteacidites symphyonemoides microspore Cookson 1950
Proteacidites cf. amolosexinus microspore Dettmann and Playford 1968
Angiospermae - Arecaceae
Arecipites spp. microspore
Angiospermae - Ericales - Ericaceae
Ericipites sp. microspore Wodehouse 1933
Coniferales - Podocarpaceae
Podocarpidites spp. microspore
Phyllocladidites mawsonii microspore Cookson 1947
Microcachryidites antarticus microspore
Dacrydiumites spp. microspore
Magnoliopsida
Gambierina edwardsii microspore
Dicotetradites clavatus microspore
Malvacipollis spp. microspore
? Tetracolporites oamaruensis microspore
Psilatricolporites sp. microspore Pierce 1961
unclassified
? Alisporites tenuicorpus microspore
Podocarpidites sp./Alisporites tenuicorpus?
Lycopodiopsida - Selaginellales
Densoisporites sp. microspore Dettmann 1963
Densoisporites sp./Cingulatisporites sp.
Bryopsida
Stereisporites sp. microspore Pflug 1953
Stereisporites (Tripunctisporis) sp.
Lycopsida
Foveotriletes lacunosus microspore Partridge 1973
Pteridopsida
Granulatisporites sp. microspore Potonié and Kremp 1954
Polypodiaceoisporites sp. microspore Potonie 1956
Cyathidites cf. splendens microspore
Cyathidites spp. microspore
? Cyathidites informal granulatus microspore
Ischyosporites sp. microspore Balme 1957
Ischyosporites sp./Cibotiidites sp.
Polypodiopsida - Polypodiaceae
Laevigatosporites spp. microspore
Polypodiopsida
? Punctatosporites sp. microspore Ibrahim 1933
Polypodiopsida - Osmundaceae
Baculatisporites spp. microspore
Baculatisporites spp./Osmundacidites spp.
unclassified
Psilatriporites sp. microspore Van der Hammen
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:169273
Authorizer:C. Jaramillo Enterer:C. Jaramillo
Research group:micropaleontology
Created:2015-05-14 10:38:56 Last modified:2015-05-14 10:38:56
Access level:the public Released:2015-05-14 10:38:56
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]