Los Fortines A: Maastrichtian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Conbaculatisporites sp. microspore Klaus 1960
0.3 %-individuals
Psilatricolpites sp. microspore Van der Hammen and Wijmstra 1964
7.0 %-individuals
Equisetopsida - Araucariaceae
Araucariacites australis microspore Cookson 1947
13.3 %-individuals
Angiospermae - Fagales - Juglandaceae
Momipites fragilis microspore Frederiksen and Christopher 1978
16.0 %-individuals
Angiospermae - Buxales
Polypodiidites sp. microspore Potonié 1966
Angiospermae - Gunnerales
Tricolpites cf. reticulatus microspore Couper 1953
3.7 %-individuals
Tricolpites reticulatus microspore Couper 1953
7.0 %-individuals
Angiospermae - Proteales - Proteaceae
Triporopollenites cf. ambiguus microspore Couper 1973
0.7 %-individuals
Angiospermae - Proteales
Triatriopollenites cf. lateflexus microspore Archangelsky 1973
0.7 %-individuals
Angiospermae - Santalales
Anacolosidites diffusa microspore Archangelsky 1973
Angiospermae - Liliaceae
Liliacidites informal sp. 1 microspore Couper 1953
1.0 %-individuals
Liliacidites variegatus microspore Couper 1953
7.3 %-individuals
Coniferales - Podocarpaceae
Podocarpidites cf. verrucosus microspore Volkheimer 1972
0.7 %-individuals
cf. Microcachryidites sp. microspore Cookson 1947
Magnoliopsida
Rousea cf. patagonica microspore Archangelsky 1973
Lycopodiopsida - Selaginellales - Selaginellaceae
Neoraistrickia sp. microspore Potonié 1956
0.7 %-individuals
Lycopodiopsida - Lycopodiales - Lycopodiaceae
Hamulatisporis informal sp. B microspore Krutzsch 1959
0.7 %-individuals
Lycopodiumsporites informal sp. 1 microspore Delcourt and Sprumont 1955
Bryopsida
Stereisporites informal sp. A microspore Pflug 1953
Stereisporites antiquasporites microspore Dettmann 1963
3.3 %-individuals
unclassified
Converrucosisporites informal sp. A microspore Potonié and Kremp 1954
Converrucosisporites informal sp. B microspore Potonié and Kremp 1954
Pteridopsida
Granulatisporites sp. microspore Potonié and Kremp 1954
1.0 %-individuals
Marattisporites scabratus microspore Couper 1958
2.0 %-individuals
Waltzispora informal sp. A microspore Staplin 1960
Todisporites informal sp. A microspore Couper 1958
1.0 %-individuals
Todisporites major microspore Couper 1953
0.7 %-individuals
Deltoidospora informal sp. A microspore Miner 1935
1.0 %-individuals
Deltoidospora informal sp. B microspore Miner 1935
0.7 %-individuals
Deltoidospora minor microspore Pocock 1970
9.7 %-individuals
Polypodiopsida - Polypodiaceae
Laevigatosporites vulgaris microspore Ibrahim 1933
Laevigatosporites ovatus microspore Wilson and Webster 1946
4.7 %-individuals
Laevigatosporites cf. discordatus microspore Thomson and Pflug 1953
Laevigatosporites gracilis microspore Wilson and Webster 1946
Polypodiopsida - Blechnaceae
Leptolepidites sp. microspore Couper 1953
0.3 %-individuals
Polypodiopsida - Gleicheniaceae
Gleicheniidites informal sp. C microspore Dettmann 1963
4.0 %-individuals
Gleicheniidites senonicus microspore Ross 1949
9.0 %-individuals
Clavifera triplex microspore Bolkhovitina 1966
3.7 %-individuals
Polypodiopsida - Gleicheniales - Matoniaceae
Dictyophyllidites mortoni microspore Playford and Dettmann 1965
see common names

Geography
Country:Argentina State/province:Chubut
Coordinates: 42.7° South, 70.0° West (view map)
Paleocoordinates:44.8° South, 58.5° West
Basis of coordinate:estimated from map
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Maastrichtian 10 m.y. bin:Cretaceous 8
Key time interval:Maastrichtian
Age range of interval:72.10000 - 66.00000 m.y. ago
Stratigraphy
Formation:Paso del Sapo
Stratigraphy comments: 0.5 meters above basis of outcrop
Lithology and environment
Primary lithology:gray argillaceous siltstone
Environment:terrestrial indet.
Taphonomy
Modes of preservation:original sporopollenin
Size of fossils:microfossils
Collection methods and comments
Collection methods:chemical
Reason for describing collection:paleoecologic analysis
Taxonomic list comments:Counts of 300 specimens.
Metadata
Also known as:Paso del Sapo Fm.
Database number:168393
Authorizer:C. Jaramillo Enterer:C. Jaramillo
Modifier:C. Jaramillo
Created:2015-04-21 13:09:59 Last modified:2015-04-21 14:24:02
Access level:the public Released:2015-04-21 13:09:59
Creative Commons license:CC BY
Reference information

Primary reference:
55109. 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]