Where: Santa Cruz, Argentina (50.4° S, 72.2° W: paleocoordinates 52.3° S, 62.0° W)
• coordinate stated in text
When: La Irene Formation, Maastrichtian (72.1 - 66.0 Ma)
Environment/lithology: fluvial-deltaic; lithified, sandy sandstone and lithified, argillaceous, sandy shale
Size class: microfossils
Preservation: soft parts, original sporopollenin
Collection methods: chemical, hydrochloric, hydroflouric
• Museum repositories: Provincial Regional Museum "Padre Manuel Jesús Molina" (MPM-MP) in the Río Gallego city, Santa Cruz, Argentina.
Primary reference: L. Povilauskas, V. Barreda, and S. Marenssi. 2008. Polen y esporas de la Formación La Irene (Maastrichtiano), sudoeste de la provincia de Santa Cruz, Argentina: primeros resultados. Geobios 41:819-831 [C. Jaramillo/J. Moreno/J. Moreno]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 149974: authorized by Carlos Jaramillo, entered by Jessica Moreno on 30.08.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
Pteridopsida | |
Granulatisporites sp., Matonisporites sp., Ischyosporites volkheimeri, Cyathidites sp., Cyathidites minor
Granulatisporites sp. Potonié and Kremp 1954
Matonisporites sp. Couper 1958
Ischyosporites volkheimeri Filatoff 1975
Cyathidites sp. Couper 1953
Cyathidites minor Couper 1953 | |
Polypodiopsida | |
Verrucosisporites sp. Potonie and Kremp 1954 | |
Gleicheniidites senonicus Ross 1949 | |
Baculatisporites sp. Thomson and Pflug 1953
Baculatisporites comaumensis Potonie 1953 | |
Laevigatosporites ovatus Wilson and Webster 1946 | |
Cicatricosisporites australiensis Potonié 1956 | |
Nyssapollenites | |
Nyssapollenites cf. squamosus Dettmann 1973 | |
Gamerroites psilasaccus, Microcachryidites antarcticus, Phyllocladidites mawsonii, Trisaccites microsaccatum, Podocarpidites elegans, Podocarpidites cf. ellipticus
Gamerroites psilasaccus Archangelsky 1988 podocarp
Microcachryidites antarcticus Couper 1953 podocarp
Phyllocladidites mawsonii Cookson 1947 podocarp
Trisaccites microsaccatum Couper 1953 podocarp
Podocarpidites elegans Romero 1977 podocarp
Podocarpidites cf. ellipticus Cookson 1947 podocarp | |
Dicotyledoneae | |
Ericipites scabratus Harris 1965 heather | |
Angiospermae | |
Peninsulapollis gillii Dettmann and Jarzen 1988 | |
Proteacidites sp. Cookson and Couper 1953 | |
Retidiporites camachoii Archangelsky 1973 | |
Longapertites sp. van Hoeken-Klinkenberg 1964 palm
Arecipites sp. Nichols et al. 1973 palm
Arecipites minutiscabratus Mc Intyre 1968 palm
Spinizonocolpites hialinus Archangelsky and Zamaloa 1986 palm | |
Liliacidites sp. Couper 1953
Liliacidites cf. variegatus Couper 1953 | |
Clavatipollenites sp. Couper 1958 | |
Magnoliopsida | |
Rousea patagonica Archangelsky 1973
Psilatricolporites sp. Pierce 1961
Senipites sp. Srivastava 1969
Rhoipites sp. Wodehouse 1933
Rhoipites minusculus Archangelsky 1973 | |
Ginkgoopsida | |
Equisetosporites sp. Daugherty 1941 | |
Cycadopites | |
Cycadopites nitidus de Jersey 1964 | |
Lycopodiopsida | |
Ceratosporites equalis Cookson and Dettmann 1958 clubmoss | |
Perotrilites majus Evans 1970 spikemoss | |
Retitriletes austroclavatidites Döring et al. 1963 clubmoss | |
Rouseisporites reticulatus | |
Rouseisporites reticulatus Pocock 1962 | |
Bryopsida | |
Stereisporites antiquasporites Dettmann 1963 | |
Dinophyceae | |
Cleistosphaeridium sp. Davey 1966 |