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
  -
 Life -
Leiosphaeridia hyalina Eisenack 1958
Bryopsida
  -
Hepaticae
 Marchantiales -
Ricciopsis sp. Lundblad 1954 liverwort
Marchantiopsida
 Sphaerocarpales -
Aequitriradites spinulosus Cookson and Dettmann 1958
Cingutriletes
  -
Cingutriletes australis Archangelsky 1972
Algae
  - Zygnemataceae
Ovoidites spp. Krutzsch 1959
Ovoidites spp. Krutzsch 1959
  - Botryococcaceae
Botryococcus "sp. 1" Kutzing 1849
Botryococcus "sp. 2" Kutzing 1849
Botryococcus "sp. 3" Kutzing 1849
Botryococcus "sp. 4" Kutzing 1849
Botryococcus sp. Kutzing 1849
Lycopodiopsida
 Selaginellales - Selaginellaceae
Neoraistrickia sp. Potonié 1956 spikemoss
Selaginella perinata Frederiksen 1980 spikemoss
 Selaginellales -
Ceratosporites equalis Cookson and Dettmann 1958 clubmoss
Camarozonosporites ambigens Playford 1971 clubmoss
Densoisporites velatus Dettmann 1963 clubmoss
 Lycopodiales -
Retitriletes austroclavatidites Döring et al. 1963 clubmoss
Retitriletes rosewoodensis de Jersey 1963 clubmoss
Integritetradites
  -
Integritetradites sp. Schrank and Mahmoud 2000
Cycadopites
  -
Cycadopites spp. Wodehouse 1933
Pseudoschizaea
  -
Pseudoschizaea circula Christopher 1976
Magnoliopsida
  -
Rousea sp. Srivastava 1969
Rousea patagonica Archangelsky 1973
Gemmatricolpites subsphaericus Archangelsky 1973
Rhoipites romeroi Baldoni 1987
Rhoipites minusculus Archangelsky 1973
Dicotyledoneae
 Ericales - Ericaceae
Ericipites scabratus Harris 1965 heather
Angiospermae
 Chloranthales - Chloranthaceae
 Proteales -
Peninsulapollis gillii Dettmann and Jarzen 1988
Retidiporites camachoi Archangelsky 1973
 Proteales - Proteaceae
 Buxales -
Tuberculatosporites parvus Archangelsky 1972
Polypodiidites sp. Potonié 1966
 Gunnerales -
 Poales - Typhaceae
 Mesangiosperms - Araceae
Proxapertites sp. Van der Hammen 1956
 Mesangiosperms - Liliaceae
Liliacidites regularis Archangelsky 1973
 Mesangiosperms - Arecaceae
Spinizonocolpites spp. Muller 1968 palm
Spinizonocolpites complex Frederiksen 1994 palm
Longapertites andreisii Archangelsky 1973 palm
Longapertites patagonicus Archangelsky 1973 palm
  -
Monosulcites sp. Cookson and Couper 1953
 Fagales - Juglandaceae
Momipites dilatus Stover et al. 1966
 Coniferales - Podocarpaceae
Dacrycarpites australiensis Cookson and Pike 1953 podocarp
Microcachryidites antarcticus Couper 1953 podocarp
Trisaccites microsaccatus Couper 1953 podocarp
Lygistepollenites florinii Stover and Evans 1973 podocarp
Podocarpidites exiguus Harris 1965 podocarp
"Podocarpidites microreticuloidatus" = Podocarpidites microreticuloidata Cookson 1947 podocarp
Podocarpidites verrucosus Volkheimer 1972 podocarp
Podocarpidites rugulosus Romero 1977 podocarp
Podocarpidites elegans Romero 1977 podocarp
Podocarpidites marwickii Couper 1953 podocarp
Pteridopsida
  -
Polypodiopsida
  - Osmundaceae
  - Polypodiaceae
Laevigatosporites ovatus Wilson and Webster 1946
 Polypodiales - Polypodiidae
Polypodiisporites irregularis Pocknal and Mildenhall 1984
 Salviniales - Polypodiidae
 Gleicheniales - Polypodiidae
 Schizaeales - Polypodiidae
  - Marsileaceae
Gabonisporis vigourouxii Boltenhagen 1967
  - Dicksoniaceae
Trilites parvallatus Krutzsch 1959
  - Gleicheniaceae
Clavifera triplex Bolkhovitina 1966
  -
Biretisporites sp. Delcourt et al. 1963
Trilobosporites
  -
Trilobosporites sp. Potonié 1956
Schizosporis reticulatus
  -
Schizosporis reticulatus Cookson and Dettmann 1959
Distaverrusporites simplex
  -
Dinophyceae
 Peridiniales - Peridiniaceae
Peridinium sp. Ehrenberg 1830
aff.P. limbatum
Peridinium aff. limbatum Lemmermann 1899
Plicatopollis
  -
Plicatopollis cretacea Frederiksen and Christopher 1978