Borehole Ca-I-Se, Sample 4, 398-401 (Cretaceous to of Brazil)

Also known as Columbi (Ca) borehole

Where: Sergipe, Brazil (10.9° S, 37.1° W: paleocoordinates 17.4° S, 12.1° W)

• coordinate stated in text

When: Cenomanian to Cenomanian (100.5 - 89.8 Ma)

Environment/lithology: terrestrial; lithified, argillaceous claystone and lithified, argillaceous shale

• Clays and shales with some minor sandstone intercalations

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 144281: authorized by Carlos Jaramillo, entered by Gabriela Doria on 03.05.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Psilatricolpates indet., Retitricolpates indet.
Angiospermae
 Buxales - Didymelaceae
Hexaporotricolpites emelianovi
Ginkgoopsida
 Ephedrales -
Ephedripites spp., Ephedripites barghoorniistaplinii, Ephedripites "straight ridges"
Ephedripites spp. Bolkhovitina and Potonié 1958
Ephedripites "straight ridges" Bolkhovitina and Potonié 1958
Cycadopsida
 Gnetales -
Steevesipollenites binodosus
Steevesipollenites binodosus Stover 1964 cycads