Catatumbo basin IV (Eocene of Colombia)

Where: Norte de Santander, Colombia (9.0° N, 73.0° W: paleocoordinates 6.5° N, 64.5° W)

• coordinate stated in text

• basin-level geographic resolution

When: IV pollen zone, Middle Eocene (48.6 - 37.2 Ma)

• The base of the Mirador is drawn at the level where the sandstones of the formation rest on the claystones or siltstones of the Los Cuervos. The contact is easily recognized and is, at least locally, unconformable. The Mirador/Los Cuervos contact represents a major change in sedimentation for the region, as it marks the appearance, at higher levels than the Uribante, of abundant, coarse, 'clean' sandstones give way to grey, micaceous, and in part sandy, shales which form the lowermost sediments of the overlying Carbonera Formation.

• bed-level stratigraphic resolution

Environment/lithology: fluvial-deltaic; lithified, massive, fine-grained, coarse, conglomeratic sandstone and lithified, lenticular, brown, argillaceous shale

• The Mirador Formation is predominantly composed of sandstones. These are pale buff to white, characteristically pure, massive, moderately hard to friable, fine- to coarse-grained, and in part conglomeratic. It contains some thin beds of grey and brownish-grey micaceous shale. An interval of shale and sandy shale with a little sandstone commonly occurs 40 to 75 meters below the upper level of the formation and ranges between 10 and 70 meters in thickness. The sandstones in the lower part of the formation tend to be more thinly bedded and less 'clean' than the bulk of the formation.

Size class: microfossils

• Pollen grain

Preservation: soft parts, original sporopollenin

Collection methods: From each coal or lignite layer several individual samples were analyzed, or the results of several samples were pooled.

Primary reference: A. E. González-Guzmán. 1967. A palynological study on the upper Los Cuervos and Mirador formations (Lower and middle Eocene; Tibu area, Colombia). 1-68 [C. Jaramillo/A. Cardenas /C. Jaramillo]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 136918: authorized by Carlos Jaramillo, entered by Andrés Cardenas on 06.12.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Scabratriporites
  -
Scabratriporites moderatus González-Guzmán 1967
Scabratriporites redundans González-Guzmán 1967
Heterocolpites
  -
Heterocolpites paluster González-Guzmán 1967
Retipollenites confusus
  -
Retipollenites confusus González-Guzmán 1967
Retitricolpites
  -
Retitricolpites simplex González-Guzmán 1967
Retitricolpites maturus González-Guzmán 1967
Retitricolpites incisus González-Guzmán 1967
Retitricolpites maledictus González-Guzmán 1967
Retitricolpites clarensis González-Guzmán 1967
Retitricolpites bonus González-Guzmán 1967
Retitricolpites conciliatus González-Guzmán 1967
Retitricolpites antonii González-Guzmán 1967
Psilatricolpites
  -
Psilatricolpites polaroides González-Guzmán 1967
Psilatricolpites acerbus González-Guzmán 1967
Psilatricolpites brevis González-Guzmán 1967
Psilatricolpites minutus González-Guzmán 1967
Foveotricolpites
  -
Foveotricolpites genuinus González-Guzmán 1967
Foveotricolpites pomarius Van der Hammen and Garcia de Mutis 1966
Retibrevitricolpites triangulatus
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Retibrevitricolpites triangulatus van Hoeken-Klinkenberg 1966
Retibrevitricolpites
  -
Retibrevitricolpites catatumbus González-Guzmán 1967
Verrutricolpites
  -
Verrutricolpites irregularis González-Guzmán 1967
Verrutricolpites unicus González-Guzmán 1967
Psilamonocolpites medius
  -
Psilamonocolpites medius Van der Hammen 1954
Retisyncolporites angularis
  -
Retisyncolporites angularis González-Guzmán 1967
Retistephanocolpites
  -
Retistephanocolpites minutus González-Guzmán 1967
Retistephanocolpites angeli
  -
Retistephanocolpites angeli Leidelmeyer 1966
Psilastephanocolpites
  -
Psilastephanocolpites adinos González-Guzmán 1967
Proxapertites operculatus
  -
Proxapertites operculatus Van der Hammen 1956
Retistephanoporites angelicus
  -
Retistephanoporites angelicus González-Guzmán 1967
Retitricolporites irregularis
  -
"Retitricolporites irregularis" = Retitrescolpites irregularis
"Retitricolporites irregularis" = Retitrescolpites irregularis Jaramillo and Dilcher 2001
Retitricolpites saturum
  -
"Retitricolpites saturum" = Retitrescolpites saturum
"Retitricolpites saturum" = Retitrescolpites saturum Jaramillo and Dilcher 2001
Retitricolpites magnus
  -
"Retitricolpites magnus" = Retitrescolpites magnus
"Retitricolpites magnus" = Retitrescolpites magnus Jaramillo and Dilcher 2001
Ginkgoopsida
 Ephedrales - Ephedraceae
Ephedripites sp. Bolkhovitina and Potonié 1958 jointfir
Papillopollis
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Papillopollis partialis González-Guzmán 1967
Retimonocolpites
  -
Retimonocolpites tertiarius González-Guzmán 1967
Retimonocolpites splendidus González-Guzmán 1967
Monocotyledoneae
 Arecales -
Clavamonocolpites terrificus González-Guzmán 1967
 Arecales - Arecaceae
Racemonocolpites facilis González-Guzmán 1967
Racemonocolpites racematus Van der Hammen 1954
Mauritiidites franciscoi van Hoeken-Klinkenberg 1964
 Arecales -
Longapertites fossuloides González-Guzmán 1967
Longapertites marginatus van Hoeken-Klinkenberg 1964
Longapertites perforatus González-Guzmán 1967
Longapertites brasiliensis González-Guzmán 1967
"Retimonocolpites regio" = Arecipites regio Jaramillo and Dilcher 2001
  -
Monoporites annuloides González-Guzmán 1967
Pteridopsida
  -
"Psilamonoletes tibui" = Laevigatosporites tibuensis
"Psilamonoletes tibui" = Laevigatosporites tibuensis Jaramillo and Dilcher 2001
Psilatriletes guaduensis
  -
Psilatriletes guaduensis Van der Hammen 1954
Magnoliopsida
  -
Clavatricolpites gracilis González-Guzmán 1967
"Retitricolporites medius" = Siltaria media Jaramillo and Dilcher 2001
"Retitricolpites perforatus" = Albertipollenites perforatus Jaramillo and Dilcher 2001
Brevitricolpites variabilis González-Guzmán 1967
Gemmatricolpites pulcher González-Guzmán 1967
Psilatricolporites normalis González-Guzmán 1967
"Retitricolpites florentinus" = Rousea florentina Jaramillo and Dilcher 2001
Gemmamonocolpites barbatus González-Guzmán 1967
Retitricolporites craceus González-Guzmán 1967
Retitricolporites equatorialis González-Guzmán 1967
Retitricolporites marianis González-Guzmán 1967
 Fabales - Fabaceae
Spirosyncolpites clavatus González-Guzmán 1967
Spirosyncolpites spiralis González-Guzmán 1967
 Myrtales - Onagraceae
"Jussitriporites undulatus" = Corsinipollenites undulatus
"Jussitriporites undulatus" = Corsinipollenites undulatus Jaramillo and Dilcher 2001
 Proteales - Proteaceae
Echitriporites trianguliformis van Hoeken-Klinkenberg 1964
 Solanales - Convolvulaceae
Perfotricolpites semistriatus González-Guzmán 1967
Perfotricolpites digitatus González-Guzmán 1967
  -
Striatricolporites agustinus González-Guzmán 1967
Gemmastephanoporites breviculus
  -
Gemmastephanoporites breviculus González-Guzmán 1967
Gemmastephanoporites polymorphus
  -
Gemmastephanoporites polymorphus González-Guzmán 1967
Scabratricolpites
  -
Scabratricolpites tibialis González-Guzmán 1967
Echinoidites problematicus
  -
Echinoidites problematicus González-Guzmán 1967
Bacustephanocolpites stereos
  -
Bacustephanocolpites stereos González-Guzmán 1967
Semitectotriporites gratus
  -
Semitectotriporites gratus González-Guzmán 1967
Polotricolporites versabilis
  -
Polotricolporites versabilis González-Guzmán 1967
Polotricolporites mocinnii
  -
Polotricolporites mocinnii González-Guzmán 1967
Polotricolporites concretus
  -
Polotricolporites concretus González-Guzmán 1967
Echimorphomonocolpites solitarius
  -
Echimorphomonocolpites solitarius González-Guzmán 1967
Pseudostephanocolpites perfectus
  -
Pseudostephanocolpites perfectus González-Guzmán 1967
Verrutricolporites
  -
Verrutricolporites haplites González-Guzmán 1967
Rugutricolporites felix
  -
Rugutricolporites felix González-Guzmán 1967
Psiladiporites
  -
Psiladiporites redundantis González-Guzmán 1967
Longitrichotomocolpites triangularis
  -
Longitrichotomocolpites triangularis González-Guzmán 1967
Arcotriporites asteroides
  -
Arcotriporites asteroides González-Guzmán 1967
Clavainaperturites
  -
Clavainaperturites ? cordatus González-Guzmán 1967
Clavainaperturites clavatus
  -
Clavainaperturites clavatus Van der Hammen and Wijmstra 1964
Retistephanocolporites
  -
Retistephanocolporites festivus González-Guzmán 1967
Magnatriporites abstractus
  -
Magnatriporites abstractus González-Guzmán 1967
Verrumonoletes usmensoides
  -
Verrumonoletes usmensoides Van der Hammen 1956
Striatricolpites
  -
Striatricolpites catatumbus González-Guzmán 1967
Striatricolpites semistriatus González-Guzmán 1967