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
•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 151462: authorized by Carlos Jaramillo, entered by Jessica Moreno on 03.10.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
Magnoliopsida | |
Retitricolporites "sp. 1" Van der Hammen and Wymstra 1964 | |
Angiospermae | |
Arecipites minutiscabratus Mc Intyre 1968 palm | |
Clavatipollenites sp. Couper 1958 | |
Triatriopollenites bertelsii Archangelsky 1973 | |
Triporopollenites minor Barreda 1997
Propylipollis cf. tenuiexinus Dettmann and Jarzen 1996
Proteacidites angulatus Stover 1973 | |
Peninsulapollis "sp. 2" Dettmann and Jarzen 1988
Peninsulapollis gillii Dettmann and Jarzen 1988 | |
Ilexpollenites clifdenensis McIntyre 1968 | |
Tricolpites "sp. 2" Couper 1953 | |
Nothofagidites dorotensis Romero 1973
Nothofagidites fuegiensis Menéndez and Caccavari 1975 | |
Phyllocladidites mawsonii, Gamerroites psilasaccus, Podocarpidites spp., Podocarpidites ellipticus, Podocarpidites elegans, Podocarpidites rugulosus, Lygistepollenites florinii, Microcachryidites antarcticus
Phyllocladidites mawsonii Cookson 1947 podocarp
Gamerroites psilasaccus Archangelsky 1988 podocarp
Podocarpidites spp. Cookson 1947 podocarp
Podocarpidites ellipticus Cookson 1947 podocarp
Podocarpidites elegans Romero 1977 podocarp
Podocarpidites rugulosus Romero 1977 podocarp
Lygistepollenites florinii Stover and Evans 1973 podocarp
Microcachryidites antarcticus Couper 1953 podocarp | |
Lycopsida | |
Foveotriletes cf. parvirectus Dettmann 1963 | |
Pteridopsida | |
Cyathidites australis Couper 1953 | |
Polypodiopsida | |
Gleicheniidites senonicus Ross 1949
Clavifera triplex Bolkhovitina 1966 | |
Rugulatisporites chubutensis Baldoni 1992 | |
Convolutispora "sp. 1" Hoffmeister et al. 1955 | |
Laevigatosporites ovatus Wilson and Webster 1946 | |
Cycadopites | |
Cycadopites sp. Wodehouse 1933 | |
Equisetopsida | |
Classopollis sp. Pflug 1953 |