Borehole 1-QS-1-MA, Sample 2 (Cretaceous of Brazil)

Also known as Barreninhas Basin

Where: Maranhao, Brazil (3.7° S, 44.6° W: paleocoordinates 10.6° S, 19.4° W)

When: Queimadas Formation, Late/Upper Cenomanian (99.6 - 93.5 Ma)

Environment/lithology: deltaic; lithified, argillaceous sandstone and lithified shale

• The upper 85 m consist of Rrapidly alternating sandstones, shales, marls and limestones passing into a 300 m thick interval of marls and mainly lemestones with decreasing clay content. The lower 500 meters are dominated by shales with occasionally limestone beds; at the top 200 m frequently marls are interbeded

Size class: microfossils

Preservation: soft parts, original sporopollenin

Collection methods: chemical, hydrochloric, hydroflouric, sieve

Primary reference: G. F. W. Herngreen. 1973. Palynology of the Albian-Cenomanian strata of Borehole 1-QS-1-MA, State of Maranhao, Brazil. Pollen et Spores 15(3-4):515-555 [C. Jaramillo/G. Doria/A. Cardenas ]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 139464: authorized by Carlos Jaramillo, entered by Gabriela Doria on 12.02.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
 Foraminifera -
Retitricolpites
  -
Retitricolpites "sp. 3" Van der Hammen 1956
Retitricolpites "sp. 4" Van der Hammen 1956
Retitricolpites "sp. 2" Van der Hammen 1956
Retitricolpites "sp. 5" Van der Hammen 1956
Retitricolpites "sp. 1" Van der Hammen 1956
Psilatricolpites
  -
Psilatricolpites spp. Van der Hammen and Wijmstra 1964
Psilatricolpites "sp. 1" Van der Hammen and Wijmstra 1964
Psilatricolpites "sp. 2" Van der Hammen and Wijmstra 1964
Psilatricolpites "sp. 3" Van der Hammen and Wijmstra 1964
Triporites
  -
Triporites sp. Van der Hammen 1954
Pinopsida
 Pinales - Cheirolepidiaceae
Ginkgoopsida
 Ephedrales - Ephedraceae
Ephedripites "sp. 1" Bolkhovitina and Potonié 1958 jointfir
Ephedripites "sp. 10" Bolkhovitina and Potonié 1958 jointfir
Ephedripites "sp. 2" Bolkhovitina and Potonié 1958 jointfir
Ephedripites "sp. 3" Bolkhovitina and Potonié 1958 jointfir
Ephedripites "sp. 4" Bolkhovitina and Potonié 1958 jointfir
Ephedripites "sp. 5" Bolkhovitina and Potonié 1958 jointfir
Ephedripites "sp. 6" Bolkhovitina and Potonié 1958 jointfir
Ephedripites "sp. 9" Bolkhovitina and Potonié 1958 jointfir
Ephedripites "sp. 11" Bolkhovitina and Potonié 1958 jointfir
Ephedripites "sp. 7" Bolkhovitina and Potonié 1958 jointfir
Ephedripites "sp. 8" Bolkhovitina and Potonié 1958 jointfir
Ephedripites jansonii Muller 1968 jointfir
Ephedripites barghoornii Morgan 1978 jointfir
Retimonocolpites
  -
Afropollis jardinus
  -
Afropollis jardinus Doyle et al. 1982
Monocotyledoneae
  -
Monosulcites sp. Cookson and Couper 1953
Cycadopsida
 Cycadales -
Eucommiidites sp. Erdtman 1948 cycads
 Gnetales -
Steevesipollenites binodosus Stover 1964 cycads
Elaterosporites verrucatus Jardiné 1967 elaterate
Elaterosporites protensus Jardiné 1967 elaterate
Elaterosporites klaszi Jardiné 1967 elaterate
Elaterocolpites castelani Herngreen 1973 elaterate
Pteridopsida
  -
Cyathidites sp. Couper 1953
 Schizaeales - Schizaeaceae
Klukisporites sp. Couper 1958
Cicatricosisporites sp. Potonie and Gelletich 1933
Cicatricosisporites hallei Delcourt and Sprumont 1955
  -
Lycopsida
  - Lycopodiaceae
Lycopodiumsporites sp. Delcourt and Sprumont 1955
Dicotyledonae
  -
Triorites sp. Couper 1953
Varia
Triorites africaensis Jardiné and Magloire 1965
Stephanocolpites sp. Van der Hammen 1954
Magnoliopsida
 Magnoliales - Trimeniaceae
 Buxales - Didymelaceae
Hexaporotricolpites lamellaferus Jardiné 1972
Incertae sedis sp. 1 Incertae sedis sp. 2
  -
Tricolpites indet. Potonié 1960
 Gymnospermophyta -
Galeacornea causea Stover 1963 elaterate
Chomotriletes
  -
Chomotriletes sp. Naumova 1953
Retitriporites
  -
Retitriporites sp. Ramanujam 1966
Elateropollenites jardinei
  -
Elateropollenites jardinei Herngreen 1973 elaterate
Perotriletes
  -
Senegalosporites
  -
Senegalosporites petrobrasi Herngreen 1973 elaterate
Reyrea polymorphus
  -
Reyrea polymorphus Herngreen 1973
Striatricolpites
  -
Striatricolpites "sp. 1" Van der Hammen 1956
Striatricolpites "sp. 2" Van der Hammen 1956