Also known as Mandacaru borehole
Where: Maranhao, Brazil (2.6° S, 42.8° W: paleocoordinates 9.7° S, 17.1° W)
• coordinate stated in text
When: Zone II, Reyrea polymorphus pollen zone, Late/Upper Albian to Late/Upper Albian (105.3 - 93.5 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 144221: authorized by Carlos Jaramillo, entered by Gabriela Doria on 02.05.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Foraminifera | |
Foraminifera indet. foram | |
Ginkgoopsida | |
Ephedripites "sp. 9" Bolkhovitina and Potonié 1958 | |
Cycadopsida | |
Elaterocolpites castelaini Jardiné and Magloire 1962 elaterate
Steevesipollenites binodosus Stover 1964 cycads
Elaterosporites protensus Jardiné 1967 elaterate | |
Reticulatasporites | |
Verrutriletes | |
Verrutriletes "sp. 1" Pierce 1961 | |
Equisetopsida | |
Classopollis "greaterthanthirty" Pflug 1953
Classopollis "lessthanthirty" Pflug 1953 | |
Retitricolpites | |
Retitricolpites operculatus Herngreen 1973 | |
Psilatricolpites | |
Psilatricolpites spp. Van der Hammen and Wijmstra 1964 | |
Angiospermae | |
Cretacaeiporites muellerii Herngreen 1973
Cretacaeiporites polygonalis Herngreen 1974
Cretacaeiporites scabratus Herngreen 1974 | |
Hexaporotricolpites emelianovi Boltenhagen 1967 | |
Galeacornea causea | |
|