Section B in Hacienda El Americano, Sierra de los Organos, western Cuba - VIII (Jurassic of Cuba)

Where: Cuba (22.7° N, 83.6° W: paleocoordinates 5.0° N, 52.0° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

• May belong already to the Berriasian.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, black limestone

• 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. During the Early Cretaceous the environment was one of deeper waters.
• 1 m. Dark, almost black, medium-bedded laminated limestone.

Size classes: macrofossils, microfossils

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 57724: authorized by Martin Aberhan, entered by Sabine Nürnberg on 20.12.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Protancyloceratidae
Protancyloceras hondense, Protancyloceras catalinense
Protancyloceras hondense Imlay 1942 ammonoid
Protancyloceras catalinense Imlay 1942 ammonoid
Protozoa
 Calpionellida -
Calpionella spp.