Los Fortines A (Cretaceous of Argentina)

Also known as Paso del Sapo Fm.

Where: Chubut, Argentina (42.7° S, 70.0° W: paleocoordinates 44.8° S, 58.5° W)

• coordinate estimated from map

When: Paso del Sapo Formation, Maastrichtian (72.1 - 66.0 Ma)

• 0.5 meters above basis of outcrop

Environment/lithology: terrestrial; gray, argillaceous siltstone

Size class: microfossils

Preservation: original sporopollenin

Collection methods: chemical

Primary reference: O. H. Papú. 1989. Estudio Palinológico de la Formación Paso del Sapo (Cretácico Superior), Valle Medio del Río Chubut. Granos de Polen, Consideraciones Estadísticas, Paleoecológicas y Paleoambientales. Ameghiniana 25(3):193-202 [C. Jaramillo/C. Jaramillo/C. Jaramillo]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 168393: authorized by Carlos Jaramillo, entered by Carlos Jaramillo on 21.04.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

• Counts of 300 specimens.
Psilatricolpites
  -
Psilatricolpites sp. Van der Hammen and Wijmstra 1964
Pinopsida
 Pinales - Podocarpaceae
 Pinales - Araucariaceae
Monocotyledoneae
 Liliales - Liliidae
Pteridopsida
  -
Todisporites major Couper 1953
  - Polypodiaceae
Polypodiidites sp. Potonié 1966
  -
Laevigatosporites ovatus Wilson and Webster 1946
Laevigatosporites gracilis Wilson and Webster 1946
Laevigatosporites cf. discordatus Thomson and Pflug 1953
 Gleicheniales - Matoniaceae
Dictyophyllidites mortoni Playford and Dettmann 1965
 Gleicheniales - Gleicheniaceae
Clavifera triplex Bolkhovitina 1966
Gleicheniidites "sp. C" Dettmann 1963
  -
Granulatisporites sp. Potonié and Kremp 1954
Waltzispora "sp. A" Staplin 1960
Deltoidospora minor Pocock 1970
Lycopsida
  -
Leptolepidites sp. Couper 1953
  - Selaginellaceae
Neoraistrickia sp. Potonié 1956
  - Lycopodiaceae
Hamulatisporis "sp. B" Krutzsch 1959
Lycopodiumsporites "sp. 1" Delcourt and Sprumont 1955
Converrucosisporites
  -
Converrucosisporites "sp. A" Potonié and Kremp 1954
Converrucosisporites "sp. B" Potonié and Kremp 1954
Bryopsida
  -
Magnoliopsida
  -
 Santalales -
Anacolosidites diffusa Archangelsky 1973
 Proteales -
 Proteales - Proteaceae
  -