D5 - San Ramon section: Danian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Rhabdosporites sp. Richardson 1960
Neoraistrichia sp. Potonié 1956
Neoraistrichia sp. of Archangelsky 1973
Spinitricolpites sp. Anzotegui
Lycopsida
Foveotriletes cf. parvirectus Dettmann 1963
Polypodiopsida - Polypodiaceae
Laevigatosporites ovatus Wilson and Webster 1946
Polypodiopsida
Biretisporites sp. Delcourt et al. 1963
Polypodiopsida - Gleicheniaceae
Gleicheniidites sp. Dettmann 1963
Gleicheniidites circinidites Dettmann 1963
Gleicheniidites senonicus Ross 1949
Polypodiopsida - Blechnaceae
Peromonolites vellosus Partridge 1973
Polypodiopsida - Dicksoniaceae
Trilites parvallatus Krutzsch 1959
Trilites volkheimerii Filatoff 1975
Trilites tuberculiformis Cookson 1947
Pteridopsida
Cyathidites australis Couper 1953
Cyathidites minor Couper 1953
Deltoidospora sp. Miner 1935
Reticuloidosporites tenellis Krutzsch 1959
Matonisporites sp. Couper 1958
Bryopsida
Stereisporites sp. Pflug 1953
Stereisporites (Tripunctisporis) sp.
Stereisporites informal sp. 2 Pflug 1953
Stereisporites antiquasporites Dettmann 1963
Angiospermae - Arecaceae
Arecipites sp. Nichols et al. 1973
Arecipites minutiscabratus Mc Intyre 1968
Longapertites cf. vaneendenburgi Geermerad et al. 1968
Angiospermae - Poales - Typhaceae
Sparganiaceaepollenites sp. Thiergart 1937
Angiospermae - Liliaceae
Liliacidites variegatus Couper 1953
Angiospermae - Chloranthales - Chloranthaceae
Clavatipollenites sp. Couper 1958
Angiospermae - Aquifoliales - Aquifoliaceae
Ilexpollenites clifdenensis McIntyre 1968
Angiospermae - Gunnerales
Tricolpites informal sp. 1 Couper 1953
Angiospermae - Proteales - Proteaceae
Propylipollis cf. tenuiexinus Dettmann and Jarzen 1996
Proteacidites informal sp. C Cookson and Couper 1953
Proteacidites angulatus Stover 1973
Echitriporites sp. Van der Hammen 1956
Angiospermae - Proteales
Triatriopollenites bertelsii Archangelsky 1973
Triatriopollenites lateflexus Archangelsky 1973
Peninsulapollis cf. truswelliae Dettmann and Jarzen 1988
Peninsulapollis gillii Dettmann and Jarzen 1988
Angiospermae - Buxales
Polypodiidites speciosus Archangelsky 1972
Angiospermae - Fabales - Fabaceae
Margocolporites sp. Ramanajuan 1966
Angiospermae - Fagales
Nothofagidites informal sp. 1 Potonié 1960
Nothofagidites dorotensis Romero 1973
Nothofagidites fuegiensis Menéndez and Caccavari 1975
Nothofagidites saraensis Menendez and Caccavari 1975
Angiospermae - Malvales - Bombacaceae
Bombacacidites cf. isoreticulatus McIntyre 1968
Angiospermae
Triorites cf. orbiculatus McIntyre 1965
Magnoliopsida
Haloragacidites harrisii Mildenhall and Harris 1971
Retitricolporites informal sp. 1 Van der Hammen and Wymstra 1964
Retitricolporites cf. minutiformis Truswell and Owen 1988
Retitricolporites chubutensis Archangelsky 1973
Senipites tercrassata Archangelsky 1973
Gemmatricolpites informal sp. 1 van Hoeken-Klinkenberg 1964
Striatricolporites gamerroi Archangelsky 1973
Rousea microreticulata Archangelsky and Zamaloa 1986
Rousea patagonica Archangelsky 1973
Rhoipites minusculus Archangelsky 1973
Psilatricolporites informal sp. 1 Pierce 1961
Psilatricolporites salamanquensis Archangelsky and Zamaloa 1986
Coniferales - Podocarpaceae
Gamerroites psilasaccus Archangelsky 1988
Dacrycarpites australiensis Cookson and Pike 1953
Trisaccites microsaccatum (Couper 1953)
original and current combination Trisaccites microsaccatus
Phyllocladidites mawsonii Cookson 1947
Podocarpidites sp. Cookson 1947
Podocarpidites elegans Romero 1977
Podocarpidites ellipticus Cookson 1947
Podocarpidites rugulosus Romero 1977
Microcachryidites antarcticus Couper 1953
Lygistepollenites florinii Stover and Evans 1973
Equisetopsida - Araucariaceae
Araucariacites australis Cookson 1947
Equisetopsida - Cheirolepidiaceae
Classopollis sp. Pflug 1953
unclassified
Psilatricolpites inargutus Archangelsky 1973
Lycopodiopsida - Isoetales - Isoetaceae
Echinosporis sp. Krutzsch 1967
Lycopodiopsida - Selaginellales
Ceratosporites equalis Cookson and Dettmann 1958
Lycopodiopsida - Selaginellales - Selaginellaceae
Herkosporites elliottii Stover 1973
Perotrilites sp. Couper 1953
see common names

Geography
Country:Argentina State/province:Chubut
Coordinates: 42.7° South, 69.8° West (view map)
Paleocoordinates:45.1° South, 58.8° West
Basis of coordinate:estimated from map
Time
Period:Paleogene Epoch:Paleocene
Stage:Danian 10 m.y. bin:Cenozoic 1
Key time interval:Danian
Age range of interval:66.00000 - 61.60000 m.y. ago
Stratigraphy
Formation:Lefipán
Local section:D5 Local bed:48.5 m
Local order:bottom to top
Stratigraphic resolution:bed
Lithology and environment
Primary lithology: lithified mudstone
Includes fossils?Y
Lithology description: This bed: Bioturbation - Heterolithic bedding The Lefipán Formation consists of marine to marginal marine, fossiliferous sandstones and mudstones with some intercalated coquinas and conglomerates.
Environment:delta front
Geology comments: During the early Danian coarsening-upward cycles reflect accumulation in tidal bars, mainly in a tide to waveinfluenced distal delta-front environment with high sedimentation rates. These deposits bear molluscan faunal associations indicative of recurrent changes from normal marine to low-salinity marine environments with low-oxygen, fine-grained, soupy substrates.
Taphonomy
Modes of preservation:body,original sporopollenin
Size of fossils:microfossils
Preservation of anatomical detail:good
Collection methods and comments
Collection methods:chemical,survey of museum collection
Reason for describing collection:paleoecologic analysis
Collection method comments: Slides are housed in the palynological collection of the Museo Paleontológico Egidio Feruglio, Trelew, Chubut, Argentina (MPEF-Palin)numbers 100 to 113.
Taxonomic list comments:Pollen terminology follows Punt et al. 2007.
Metadata
Database number:151457
Authorizer:C. Jaramillo Enterer:J. Moreno
Modifier:J. Moreno Research group:paleobotany
Created:2013-10-03 05:42:46 Last modified:2013-10-02 14:43:52
Access level:authorizer only Released:2016-10-03 05:42:46
Creative Commons license:CC BY
Reference information

Primary reference:
47987. V. D. Barreda, N. R. Cúneo, P. Wilf, E. D. Currano, R. A. Scasso and H. Brinkhuis. 2012. Cretaceous/Paleogene Floral Turnover in Patagonia: Drop in Diversity, Low Extinction, and a Classopollis Spike. PLoS ONE 7(12):e52455 [C. Jaramillo/J. Moreno]