Mal Paso section, Sierra de los Organos, western Cuba - III (Jurassic of Cuba)

Where: Cuba (22.4° N, 84.1° W: paleocoordinates 5.0° N, 52.5° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: El Americano Member (Guasasa Formation), Tithonian (152.1 - 145.0 Ma)

• El Americano Member (?)

• group of beds-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified, gray, blue lime mudstone and lithified, gray, argillaceous, calcareous shale

• The Lower Tithonian strata of the Sierra de los Organos were laid down in a shallow, poorly ventilated sea. At the end of the Early Tithonian, the conditions of sedimentation changed slightly, mainly due to moderate deepening of the basin. In the Late Tithonian the basin was apparently shallower and the energy of the environment increased.
• ca. 3.5 m. Dark-grey and dark-greyish-blue micritic limestone, medium- and thin-bedded. The limestone is intercalated with thin layers of dark-grey clayey-marly shale and shaly limestone.

Size classes: macrofossils, microfossils

Preservation: recrystallized

Primary reference: R. Myczynski. 1989. Ammonite biostratigraphy of the Tithonian of Western Cuba. Annales Societatis Geologorum Poloniae 59:43-125 [M. Aberhan/S. Nurnberg]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 57195: authorized by Martin Aberhan, entered by Sabine Nürnberg on 09.12.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Neocomitidae
? Berriasella sp.
? Berriasella sp. Uhlig 1905 ammonite
Foraminifera
 Foraminiferida -
"Foraminiferida indet." = Foraminifera
"Foraminiferida indet." = Foraminifera Eichwald 1830 foram
Protozoa
  -
Radiolaria indet.