Also known as Mandacaru borehole
Where: Maranhao, Brazil (2.6° S, 42.8° W: paleocoordinates 7.1° S, 13.7° W)
• coordinate stated in text
When: Zone I, Reyrea polymorphus pollen zone, Early/Lower Albian to Early/Lower Albian (112.0 - 105.3 Ma)
• The interpretation of the Schlumberger logs by
•PETROBRAS is apparently of a provisional character
•and shows many questional formation and member
•subdivisions. For these reasons these lithologic units
•are not used in order to avoid confusion with
•those established and published by PAMPLONA (1971).
Environment/lithology: terrestrial; lithified, argillaceous shale and lithified, argillaceous sandstone
Size class: microfossils
Preservation: soft parts, original sporopollenin
Collection methods: chemical, hydrochloric, hydroflouric, sieve
Primary reference: G. F. W. Herngreen. 1975. Palynology of the Middle and Upper Cretaceous strata in Brazil. Medelingen Rijks Geologische Dienst, Nieuwe Serie 26:39-91 [C. Jaramillo/G. Doria/A. Cardenas ]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 144244: authorized by Carlos Jaramillo, entered by Gabriela Doria on 02.05.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
Psilatriletes | |
Psilatriletes sp. PotoniƩ 1956 | |
Polypodiopsida | |
Cicatricosisporites hallei Delcourt and Sprumont 1955 | |
Reticulatasporites | |
Equisetopsida | |
Magnoliopsida | |
Psilatricolporites sp. Pierce 1961 | |
Angiospermae | |
Cretacaeiporites muellerii Herngreen 1973 | |
Retimonocolpites sp. Pierce 1961 | |
Galeacornea causea | |
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