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 Cardenas on 11.12.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Psilamonocolpites grandis
  -
Psilamonocolpites grandis2 Van der Hammen 1954
Retistephanocolpites
  -
Retistephanocolpites sp.2 Leidelmeyer 1966
Pinopsida
 Pinales - Podocarpaceae
Monocotyledoneae
 Arecales -
Arecipites sp.2 Nichols et al. 1973
Arecipites asymmetricus2 Fredriksen 1983
  -
Sparganiaceaepollenites delicata2 Mautino and Anzótegui 2002
 Liliales - Liliidae
Liliacidites vermireticulatus2 Archangelsky and Zamaloa 1986
Monocots
 Poales - Poaceae
Graminidites sp.2 Potonie 1960
Graminidites media2 Cookson 1947
Cycadopsida
 Gnetales -
Equisetosporites sp.2 Daugherty 1941 cycads
Equisetosporites claricristatus2 Barreda 1997 cycads
Equisetosporites lusaticus2 Barreda 1997 cycads
Equisetosporites notensis2 Romero 1977 cycads
Muricingulisporis
  -
Muricingulisporis verrucosus Mautino and Anzótegui 1998
Pteridopsida
  -
Leiotriletes sp.1 Potonie and Kremp 1954
Leiotriletes regularis1 Krutzsch 1959
Todisporites major1 Couper 1953
Todisporites minor1 Couper 1953
Laevigatosporites ovatus1 Wilson and Webster 1946
Cyathidites minor1 Couper 1953
 Osmundales - Osmundaceae
Rugulatisporites caperatus1 van Hoeken-Klinkenberg 1964
 Schizaeales - Schizaeaceae
Klukisporites sp.1 Couper 1958
Undulatisporites sp.1 Pflug 1953
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
 Gleicheniales - Matoniaceae
Dictyophyllidites mortoni1 Playford and Dettmann 1965
Dictyophyllidites chiquimilense Mautino and Anzótegui 1998
Dictyophyllidites arcuatus1 Pocknall and Mildenhall 1984
 Gleicheniales - Gleicheniaceae
 Polypodiales -
Polypodiisporites speciosus1 Khan and Martin 1971
  -
Lycopsida
  -
Foveotriletes microfoveolatus1 Menéndez 1968
Reworked species according with the authors
Leptolepidites major1 Couper 1953
Reworked species according with the authors
  - Lycopodiaceae
Reticulatisporites sp.1 Ibrahim 1933
Reworked species according with the authors. According with the authors is the same Reticulatisporites sp. from Baldoni & Archangelsky (1983)
Annulispora folliculosa
  -
Annulispora folliculosa1 De Jersey 1959
Reworked species according with the authors
Bryopsida
  -
Magnoliopsida
  -
Parsonsidites multiporus3 Mildenhall 1960
Malvacipollis argentina2 Zamaloa and Romero 1990
Verrustephanoporites simplex2 Leidelmeyer 1966
Dicotyledonae
 Rubiales - Asteridae
  -
Triorites orbiculatus2 McIntyre 1965
 Polygonales - Caryophyllidae
Polycolporopollenites esobalteus3 Pocknall and Mildenhall 1984
Magnoliopsida
  -
Rhoipites baculatus3 Archangelsky 1973
Rhoipites exiguus3 Pocknall 1982
Rhoipites cienaguensis3 Barreda 1997
Rhoipites alveolatus3 Couper 1953
Rhoipites santafesii3 Anzotegui and Garralla 1986
Rhoipites karamuensis3 Pocknall 1985
Psilatricolporites cyamus3 Van der Hammen and Wijmstra 1964
Periporopollenites vesicus3 Partridge 1973
 Gentianales - Apocynaceae
Cricotriporites guianensis2 Leidelmeyer 1966
 Fabales - Fabaceae
Margocolporites sp.3 Ramanajuan 1966
 Myrtales -
Myrtaceidites sp.3 Cookson and Pike 1960
 Malvales -
Echiperiporites sp.3 Anzotegui and Cuadrado 1996
Echiperiporites parviechinatus3 Anzotegui and Cuadrado 1996
 Asterales - Asteraceae
Tubulifloridites sp.3 Potonie 1960
Authors described Tubulifloridites sp.1, sp.2, sp.3, and sp.4
 Fagales -
Nothofagidites saraensis2 Menendez and Caccavari 1975
 Solanales - Convolvulaceae
Perfotricolpites sp.2 González-Guzmán 1967
  -
Tricolpites sp.2 Potonié 1960
Striatricolporites gamerroi3 Archangelsky 1973
Verrucingulatisporites
  -
Chenopodipollis
  -
Chenopodipollis multicavus3 Anzotegui and Cuadrado 1996
Psilaperiporites minimus
  -
Psilaperiporites cf. minimus3 Regali et al. 1974
Tetracolporopollenites
  -
Alnipollenites verus
  -
Alnipollenites verus2 Potonie 1931
Gomphrenipollis
  -
Gomphrenipollis sp.3 Anzotegui and Cuadrado 1996
Plicifera
  -
Plicifera delicata1 Bolchovitina 1968
Reworked species according with the authors
Cyperaceaepollis neogenicus
  -