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
Nyssapollenites | |
Nyssapollenites cf. squamosus Dettmann 1973 | |
Cycadopites | |
Cycadopites nitidus de Jersey 1964 | |
Ginkgoopsida | |
Equisetosporites sp. Daugherty 1941 | |
Dicotyledoneae | |
Ericipites scabratus Harris 1965 heather | |
Angiospermae | |
Peninsulapollis gillii Dettmann and Jarzen 1988 | |
Proteacidites sp. Cookson and Couper 1953 | |
Retidiporites camachoii Archangelsky 1973 | |
Liliacidites sp. Couper 1953
Liliacidites cf. variegatus Couper 1953 | |
Arecipites sp. Nichols et al. 1973 palm
Arecipites minutiscabratus Mc Intyre 1968 palm
Spinizonocolpites hialinus Archangelsky and Zamaloa 1986 palm
Longapertites sp. van Hoeken-Klinkenberg 1964 palm | |
Clavatipollenites sp. Couper 1958 | |
Magnoliopsida | |
Senipites sp. Srivastava 1969
Psilatricolporites sp. Pierce 1961
Rousea patagonica Archangelsky 1973
Rhoipites sp. Wodehouse 1933
Rhoipites minusculus Archangelsky 1973 | |
Trisaccites microsaccatum, Podocarpidites elegans, Podocarpidites cf. ellipticus, Phyllocladidites mawsonii, Microcachryidites antarcticus, Gamerroites psilasaccus
Trisaccites microsaccatum Couper 1953 podocarp
Podocarpidites elegans Romero 1977 podocarp
Podocarpidites cf. ellipticus Cookson 1947 podocarp
Phyllocladidites mawsonii Cookson 1947 podocarp
Microcachryidites antarcticus Couper 1953 podocarp
Gamerroites psilasaccus Archangelsky 1988 podocarp | |
Lycopodiopsida | |
Retitriletes austroclavatidites Döring et al. 1963 clubmoss | |
Perotrilites majus Evans 1970 spikemoss | |
Ceratosporites equalis Cookson and Dettmann 1958 clubmoss | |
Rouseisporites reticulatus | |
Rouseisporites reticulatus Pocock 1962 | |
Bryopsida | |
Stereisporites antiquasporites Dettmann 1963 | |
Polypodiopsida | |
Baculatisporites sp. Thomson and Pflug 1953
Baculatisporites comaumensis Potonie 1953 | |
Laevigatosporites ovatus Wilson and Webster 1946 | |
Verrucosisporites sp. Potonie and Kremp 1954 | |
Gleicheniidites senonicus Ross 1949 | |
Cicatricosisporites australiensis Potonié 1956 | |
Pteridopsida | |
Ischyosporites volkheimeri, Matonisporites sp., Cyathidites sp., Cyathidites minor, Granulatisporites sp.
Ischyosporites volkheimeri Filatoff 1975
Matonisporites sp. Couper 1958
Cyathidites sp. Couper 1953
Cyathidites minor Couper 1953
Granulatisporites sp. Potonié and Kremp 1954 | |
Dinophyceae | |
Cleistosphaeridium sp. Davey 1966 |