Puesto Fernández - Bororó (Paleocene of Argentina)

Where: Chubut, Argentina (43.7° S, 67.8° W: paleocoordinates 46.2° S, 56.7° W)

When: Lower Member (Bororó Formation), Danian (66.0 - 61.6 Ma)

• This palynological assemblage was yielded by a single 15 cm thick bed.

Environment/lithology: marginal marine; lithified, carbonaceous mudstone

• The Lower Member of the Cerro Bororó Fm unconformably overlies the Late Cretaceous Chubut Group. An alternation of marginal marine strata and near-coast freshwater deposits occur in the sections.
• This palynological assemblage was yielded by a single 15 cm thick bed of carbonaceous mudstone.

Size class: microfossils

Preservation: soft parts, original sporopollenin

Collection methods: chemical, hydrochloric, hydroflouric,

• SEM studies (Phillips XL Serie 30) were done at the Museo “B. Rivadavia.”

Primary reference: L. Scafati, D. L. Melendi, and W. Volkheimer. 2009. A Danian subtropical lacustrine palynobiota from South America (Bororó Formation, San Jorge Basin, Patagonia - Argentina). Geological Acta 7(1-2):35-61 [C. Jaramillo/J. Moreno]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 152264: authorized by Carlos Jaramillo, entered by Jessica Moreno on 14.11.2013, edited by Carlos Jaramillo

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Schizosporis reticulatus
  -
Schizosporis reticulatus Cookson and Dettmann 1959
Chlorophyceae
  -
Botryococcus "sp. 1" Kutzing 1849
Botryococcus "sp. 2" Kutzing 1849
Botryococcus "sp. 3" Kutzing 1849
Botryococcus "sp. 4" Kutzing 1849
Botryococcus sp. Kutzing 1849
Charophyceae
  - Zygnemataceae
Ovoidites spp. Krutzsch 1959
Ovoidites spp. Krutzsch 1959
Integritetradites
  -
Integritetradites sp. Schrank and Mahmoud 2000
Proxapertites
  -
Proxapertites sp. Van der Hammen 1956
Pinopsida
 Pinales - Podocarpaceae
Monocotyledoneae
 Arecales -
Spinizonocolpites complex Frederiksen 1994
Longapertites patagonicus Archangelsky 1973
Longapertites andreisii Archangelsky 1973
  -
Monosulcites sp. Cookson and Couper 1953
 Liliales - Liliidae
Liliacidites regularis Archangelsky 1973
Cycadopites
  -
Cycadopites spp. Wodehouse 1933
Gabonisporis vigourouxii
  -
Gabonisporis vigourouxii Boltenhagen 1967
Pteridopsida
  -
  - Polypodiaceae
Polypodiidites sp. Potonié 1966
  -
Trilites parvallatus Krutzsch 1959
Laevigatosporites ovatus Wilson and Webster 1946
Cyathidites patagonicus Archangelsky 1972
Matonisporites crassiangulatus Levet-Carette 1964
 Osmundales - Osmundaceae
 Salviniales - Azollaceae
 Schizaeales - Schizaeaceae
Biretisporites sp. Delcourt et al. 1963
 Gleicheniales - Matoniaceae
 Gleicheniales - Gleicheniaceae
Clavifera triplex Bolkhovitina 1966
 Polypodiales -
Polypodiisporites irregularis Pocknal and Mildenhall 1984
  -
Lycopsida
 Lycopodiales -
  - Selaginellaceae
  - Lycopodiaceae
Retitriletes austroclavatidites Döring et al. 1963
Trilobosporites
  -
Trilobosporites sp. Potonié 1956
Cingutriletes
  -
Cingutriletes australis Archangelsky 1972
Marchantiopsida
 Sphaerocarpales -
Aequitriradites spinulosus Cookson and Dettmann 1961
Bryopsida
  -
Magnoliopsida
  -
 Magnoliales - Chloranthaceae
  -
Rousea sp. Srivastava 1969
Rousea patagonica Archangelsky 1973
 Proteales -
Retidiporites camachoi Archangelsky 1973
 Proteales - Proteaceae
 Proteales -
  -
 Life -
Leiosphaeridia hyalina Eisenack 1958 acritarcs
Peridinium
  -
Peridinium sp. Ehrenberg 1830
aff.P. limbatum
Peridinium aff. limbatum Lemmermann 1899
Distaverrusporites simplex
  -
Pseudoschizaea circula
  -
Pseudoschizaea circula Christopher 1976
Hepatophyta
 Marchantiales -
Ricciopsis sp. Lundblad 1954