Mal Paso section, Sierra de los Organos, western Cuba - IV (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, blue lime mudstone

• 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.
• up to 1.5 m. Dark-blue, locally laminated, micritic limestone with shaly fissility. Specimens collected from the limestone.

Size class: macrofossils

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 57196: 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
Bivalvia
 Pectinida - Buchiidae
Buchia sp.
Buchia sp. Rouillier 1845 scallop
Cephalopoda
 Ammonitida - Oppeliidae
Hildoglochiceras (Salinites) gallardoi, Hildoglochiceras (Salinites) cf. bicostatum
Hildoglochiceras (Salinites) gallardoi Chudoley and Furrazola 1968 ammonite
Hildoglochiceras (Salinites) cf. bicostatum Chudoley and Furrazola 1968 ammonite