Section A in Hacienda El Americano, Sierra de los Organos, western Cuba - V (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)

• group of beds-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified, gray, 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.
• 9 m. Dark-grey-blue micritic nodular limestone with marly-clayey intercalations, locally affected by boudinage.

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 57715: authorized by Martin Aberhan, entered by Sabine Nürnberg on 20.12.2005, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Himalayitidae
Durangites sp., Durangites aff. humboldti, Durangites aff. acanthicus
Durangites aff. humboldti Burckhardt 1912 ammonite
Durangites aff. acanthicus Burckhardt 1912 ammonite
 Ammonitida - Neocomitidae
Kossmatia cf. alamitosensis
Kossmatia cf. alamitosensis Aguilera 1895 ammonite
 Ammonitida - Simoceratidae
Hemisimoceras aff. semistriatum
 Ammonitida - Oppeliidae
"Hildoglochiceras (Salinites) sp." = Salinites, "Hildoglochiceras (Salinites) grossicostatum" = Salinites grossicostatum, Hildoglochiceras (Salinites) bicostatum, Hildoglochiceras (Salinites) gallardoi
"Hildoglochiceras (Salinites) sp." = Salinites Cantu-Chapa 1968 ammonite
"Hildoglochiceras (Salinites) grossicostatum" = Salinites grossicostatum Imlay 1939 ammonite
Hildoglochiceras (Salinites) bicostatum Chudoley and Furrazola 1968 ammonite
Hildoglochiceras (Salinites) gallardoi Chudoley and Furrazola 1968 ammonite
 Ammonitida - Haploceratidae
? Haploceras spp., ? Haploceras aff. veracruzanum
? Haploceras spp. Zittel 1870 ammonite
? Haploceras aff. veracruzanum Cantu Chapa 1976 ammonite
 Ammonitida - Olcostephanidae
Proniceras cf. subpronum
Proniceras cf. subpronum Burckhardt 1919 ammonite
Bivalvia
 Pectinida - Buchiidae
Buchia aff. okensis
Buchia aff. okensis Pavlow 1907 scallop