Also known as Barreninhas Basin
Where: Maranhao, Brazil (3.7° S, 44.6° W: paleocoordinates 10.9° S, 18.9° W)
When: Queimadas Formation, Late/Upper Albian to Late/Upper Albian (105.3 - 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 142278: authorized by Carlos Jaramillo, entered by Gabriela Doria on 07.04.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
unclassified |
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Striatricolpites |
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Psilatricolpites |
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Retitricolpites |
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Triporites |
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Equisetopsida |
Pinidae - Pinidae |
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Scabramonocolpites |
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Retitriporites |
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Dicotyledoneae |
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Angiospermae |
Buxales - Didymelaceae |
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Gunnerales - |
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Austrobaileyales - Trimeniaceae |
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Ginkgoopsida |
Ephedrales - |
Ephedripites barghorrrnii, Ephedripites brasiliensis, Ephedripites "sp. 1", Ephedripites "sp. 10", Ephedripites "sp. 11", Ephedripites "sp. 2", Ephedripites "sp. 3", Ephedripites "sp. 4", Ephedripites "sp. 5", Ephedripites "sp. 6", Ephedripites "sp. 7", Ephedripites "sp. 8", Ephedripites "sp. 9", Ephedripites jansonii
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Cycadopsida |
Cycadales - |
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Gnetales - |
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Polypodiopsida |
Schizaeales - Polypodiidae |
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Pteridopsida |
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Lycopodiopsida |
Lycopodiales - Lycopodiaceae |
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Galeacornea causea |
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Verrutriletes |
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Foraminifera |
Foraminifera - |
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Chomotriletes |
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Senegalosporites |
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Perotriletes pannuceus |
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Elateropollenites jardinei |
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Reyrea polymorphus |
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