Vallecito (Miocene of Argentina)

Where: Catamarca, Argentina (26.8° S, 66.0° W: paleocoordinates 27.0° S, 64.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Chiquimil Formation, Late/Upper Miocene (11.6 - 5.3 Ma)

• La Formacion Chiquimil integra la secuencia basal del Grupo Santa Maria, estando apoyada sobre la Formacion Las Arcas, e infrayacente a la Formacion Andalhuala.

• bed-level stratigraphic resolution

Environment/lithology: "floodplain"; lithified, fine-grained, medium, yellow, sandy sandstone and lithified, green, red, argillaceous siltstone

• La Formacion Chiquimil, en el area de estudio, presenta una potencia de 360 metros. Sedimentologicamente, esta constituida por areniscas medianas a finas, de color predominantemente amarillo, con intercalaciones de conglomerados, alternando con limolitas y arcilitas verdes o rojizas

Size class: microfossils

Preservation: soft parts, original sporopollenin

Collection methods: bulk, chemical,

Primary reference: L. R. Mautino and L. M. Anzótegui. 1998. Palinología de la Formación Chiquimil (Mioceno superior) en Vallecito, provincia de Catamarca, Argentina. Parte I. Esporas: Especies nuevas. Ameghiniana 35(2):227-233 [C. Jaramillo/A. Cardenas ]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 137142: authorized by Carlos Jaramillo, entered by Andrés Cárdenas on 11.12.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Retistephanocolpites
  -
Retistephanocolpites sp.2 Leidelmeyer 1966
Psilamonocolpites grandis
  -
Psilamonocolpites grandis2 Van der Hammen 1954
Lycopodiopsida
 Lycopodiales - Lycopodiaceae
Reticulatisporites sp.1 Ibrahim 1933 clubmoss
Reworked species according with the authors. According with the authors is the same Reticulatisporites sp. from Baldoni & Archangelsky (1983)
Muricingulisporis
  -
Muricingulisporis verrucosus Mautino and Anzótegui 1998
Lycopsida
  -
Foveotriletes microfoveolatus1 Menéndez 1968
Reworked species according with the authors
Pteridopsida
  -
Leiotriletes sp.1 Potonie and Kremp 1954
Leiotriletes regularis1 Krutzsch 1959
Deltoidospora sp.1 Miner 1935
Deltoidospora minor1 Pocock 1970
Cyathidites minor1 Couper 1953
Todisporites major1 Couper 1953
Todisporites minor1 Couper 1953
Polypodiopsida
  - Gleicheniaceae
 Polypodiales - Polypodiidae
Polypodiisporites speciosus1 Sah and Dutta 1968
 Gleicheniales - Polypodiidae
Dictyophyllidites mortoni1 Playford and Dettmann 1965
Dictyophyllidites chiquimilense Mautino and Anzótegui 1998
Dictyophyllidites arcuatus1 Pocknall and Mildenhall 1984
 Schizaeales - Polypodiidae
Klukisporites sp.1 Couper 1958
Undulatisporites sp.1 Pflug 1953
  - Polypodiaceae
Laevigatosporites ovatus1 Wilson and Webster 1946
  - Osmundaceae
Rugulatisporites caperatus1 van Hoeken-Klinkenberg 1964
  - Blechnaceae
Leptolepidites major1 Couper 1953
Reworked species according with the authors
  -
Biretisporites sp.1 Delcourt et al. 1963
Reworked species according with the authors. According with the authors is the same Biretisporites sp. A from Archangelsky & Seoane (1994)
Biretisporites potoniaei1 Delcourt and Sprumont 1955
Reworked species according with the authors
Ginkgoopsida
 Ephedrales -
Angiospermae
 Malvales -
Echiperiporites sp.3 Anzotegui and Cuadrado 1996
Echiperiporites parviechinatus3 Anzotegui and Cuadrado 1996
 Fabales - Fabaceae
Margocolporites sp.3 Ramanajuan 1966 legume
 Fagales -
Nothofagidites saraensis2 Menendez and Caccavari 1975
 Fagales - Betulaceae
Alnipollenites verus2 Potonie 1931 birch
Dicotyledoneae
 Myrtales -
Myrtaceidites sp.3 Cookson and Pike 1960
  -
Triorites orbiculatus2 McIntyre 1965
Angiospermae
 Gunnerales -
Tricolpites sp.2 Couper 1953
 Buxales -
Tuberculatosporites parvus1 Archangelsky 1972
 Solanales - Convolvulaceae
Perfotricolpites sp.2 González-Guzmán 1967 bindweed
 Caryophyllales - Polygonaceae
Polycolporopollenites sp.3 Kedves 1965 knotweed
Polycolporopollenites esobalteus3 Pocknall and Mildenhall 1984 knotweed
 Caryophyllales - Chenopodiaceae
Chenopodipollis multicavus3 Anzotegui and Cuadrado 1996
 Gentianales - Rubiaceae
Palaeocoprosmadites zelandiae3 Pocknall 1982 coffee
 Gentianales - Apocynaceae
Cricotriporites guianensis2 Leidelmeyer 1966 dogbane
 Asterales - Asteraceae
Tubulifloridites sp.3 Potonie 1960 daisy
Authors described Tubulifloridites sp.1, sp.2, sp.3, and sp.4
Tubulifloridites antipodica3 Cookson 1947 daisy
 Mesangiosperms - Arecaceae
Arecipites sp.2 Nichols et al. 1973 palm
Arecipites asymmetricus2 Fredriksen 1983 palm
 Mesangiosperms - Liliaceae
Liliacidites vermireticulatus2 Archangelsky and Zamaloa 1986
 Poales - Poaceae
Graminidites sp.2 Potonie 1960 bamboo
Graminidites media2 Cookson 1947 bamboo
 Poales - Typhaceae
Sparganiaceaepollenites delicata2 Mautino and Anzótegui 2002
 Coniferales - Podocarpaceae
Podocarpidites marwickii2 Couper 1953 podocarp
Podocarpidites exiguus2 Harris 1965 podocarp
Podocarpidites ellipticus2 Cookson 1947 podocarp
Magnoliopsida
  -
Striatricolporites gamerroi3 Archangelsky 1973
Psilatricolporites cyamus3 Van der Hammen and Wijmstra 1964
Rhoipites santafesii3 Anzotegui and Garralla 1986
Rhoipites alveolatus3 Couper 1953
Rhoipites cienaguensis3 Barreda 1997
Rhoipites exiguus3 Pocknall 1982
Rhoipites baculatus3 Archangelsky 1973
Rhoipites karamuensis3 Pocknall 1985
Malvacipollis argentina2 Zamaloa and Romero 1990
Parsonsidites multiporus3 Mildenhall 1960
Verrustephanoporites simplex2 Leidelmeyer 1966
Annulispora folliculosa
  -
Annulispora folliculosa1 De Jersey 1959
Reworked species according with the authors
Bryopsida
  -
 Life -
Plicifera delicata1 Bolchovitina 1968
Reworked species according with the authors
Gomphrenipollis sp.3 Anzotegui and Cuadrado 1996
Psilaperiporites cf. minimus3 Regali et al. 1974