PBDB Collection

D1 - San Ramon section (Paleocene of Argentina)

Where: Chubut, Argentina (42.7° S, 69.8° W: paleocoordinates 45.1° S, 58.8° W)

• coordinate estimated from map

When: Lefipán Formation, Danian (66.0 - 61.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: delta front; lithified mudstone

• 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.

• This bed: Bioturbation

•The Lefipán Formation consists of marine to marginal marine, fossiliferous sandstones and mudstones with some intercalated coquinas and conglomerates.

Size class: microfossils

• Samples were marine (dinoflagellate cysts)and continental (spores, pollen grains, fungal remains, fresh water algae) palynomorphs.

Preservation: original sporopollenin

Collection methods: chemical,

• Slides are housed in the palynological collection of the Museo Paleontológico Egidio Feruglio, Trelew, Chubut, Argentina (MPEF-Palin)numbers 100 to 113.

Primary reference: 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]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 151453: authorized by Carlos Jaramillo, entered by Jessica Moreno on 03.10.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

• Pollen terminology follows Punt et al. 2007.

Show authors, comments, and common names

Psilatricolpites
-	Psilatricolpites inargutus Psilatricolpites inargutus Archangelsky 1973
Equisetopsida
Pinidae - Pinidae	Classopollis sp. Classopollis sp. Pflug 1953
Angiospermae
Fagales -	Nothofagidites dorotensis Nothofagidites dorotensis Romero 1973
Gunnerales -	Tricolpites reticulatus Tricolpites reticulatus Couper 1953
Proteales - Proteaceae	Lewalanipollis senectus, Echitriporites sp., Triporopollenites minor, Proteacidites "sp. C" Lewalanipollis senectus Dettmann and Jarzen 1996 Echitriporites sp. Van der Hammen 1956 Triporopollenites minor Barreda 1997 Proteacidites "sp. C" Cookson and Couper 1953
Proteales -	Triatriopollenites "sp. 1", Triatriopollenites lateflexus, Peninsulapollis cf. truswelliae Triatriopollenites "sp. 1" Thomson and Pflug 1953 Triatriopollenites lateflexus Archangelsky 1973 Peninsulapollis cf. truswelliae Dettmann and Jarzen 1988
Gentianales - Apocynaceae	Cricotriporites sp. Cricotriporites sp. Leidelmeyer 1966 dogbane cf. Cricotriporites
Mesangiosperms - Arecaceae	Arecipites minutiscabratus Arecipites minutiscabratus Mc Intyre 1968 palm

Coniferales - Podocarpaceae	Podocarpidites spp., Podocarpidites ellipticus, Podocarpidites elegans, Phyllocladidites mawsonii, Microcachryidites antarcticus Podocarpidites spp. Cookson 1947 podocarp Podocarpidites ellipticus Cookson 1947 podocarp Podocarpidites elegans Romero 1977 podocarp Phyllocladidites mawsonii Cookson 1947 podocarp Microcachryidites antarcticus Couper 1953 podocarp
Magnoliopsida
-	Senipites tercrassata, Gemmatricolpites "sp. 1", Forcipites cf. longus, Psilatricolporites "sp. 1", Haloragacidites harrisii, Retitricolporites "sp. 1" Senipites tercrassata Archangelsky 1973 Gemmatricolpites "sp. 1" van Hoeken-Klinkenberg 1964 Forcipites cf. longus Dettmann and Jarzen 1988 cf. Forcipites? longus Psilatricolporites "sp. 1" Pierce 1961 Haloragacidites harrisii Mildenhall and Harris 1971 Retitricolporites "sp. 1" Van der Hammen and Wymstra 1964
Lycopodiopsida
Selaginellales -	Camarozonosporites spp. Camarozonosporites spp. Potonié 1956 clubmoss
Lycopodiales -	Retitriletes austroclavatidites Retitriletes austroclavatidites Döring et al. 1963 clubmoss
Bryopsida
-	Stereisporites sp. Stereisporites sp. Pflug 1953 Stereisporites (Tripunctisporis) sp.
Lycopsida
-	Foveotriletes cf. parvirectus Foveotriletes cf. parvirectus Dettmann 1963
Pteridopsida
-	Leiotriletes sp., Cyathidites minor, Cyathidites patagonicus, Cyathidites australis, Deltoidospora sp. Leiotriletes sp. Potonie and Kremp 1954 Cyathidites minor Couper 1953 Cyathidites patagonicus Archangelsky 1972 Cyathidites australis Couper 1953 Deltoidospora sp. Miner 1935
Polypodiopsida
- Polypodiaceae	Laevigatosporites ovatus Laevigatosporites ovatus Wilson and Webster 1946
- Osmundaceae	Rugulatisporites chubutensis Rugulatisporites chubutensis Baldoni 1992
- Dicksoniaceae	Trilites tuberculiformis, Cyatheacidites annulatus Trilites tuberculiformis Cookson 1947 Cyatheacidites annulatus Cookson 1947
- Gleicheniaceae	Gleicheniidites sp., Gleicheniidites circinidites, Gleicheniidites senonicus, Clavifera triplex Gleicheniidites sp. Dettmann 1963 Gleicheniidites circinidites Dettmann 1963 Gleicheniidites senonicus Ross 1949 Clavifera triplex Bolkhovitina 1966
-	Verrucosisporites "sp. 1" Verrucosisporites "sp. 1" Potonie and Kremp 1954
Schizaeales - Polypodiidae	Convolutispora "sp. 1" Convolutispora "sp. 1" Hoffmeister et al. 1955