Barbacoas - type section [Aguada Mbr, La Luna Fm] (Cretaceous of Venezuela)

Where: Lara, Venezuela (9.8° N, 70.0° W: paleocoordinates 1.7° N, 45.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Aguada Member (La Luna Formation), Late/Upper Cenomanian (99.6 - 93.5 Ma)

• STRATIGRAPHIC RELATIONS: From the Aguada Mbr of the La Luna Fm, which regionally overlies the La Puya and Peñas Altas Fms (Albian-Aptian) and is overlain by the Colón Fm. AGE: Early Cenomanin. STRATIGRAPHIC POSITION: About 15-35 m above the top of the La Puya Fm.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

• ENVIRONMENT: Not stated, but said to be facies which become euxinic, from a shale lateral equivalent.
• SPECIFIC LITHOLOGY: Not stated, but presumably siliciclastic. LITHIFICATION: Lithified, on the basis of figured specimens.

Size class: macrofossils

Preservation: mold/impression

Reposited in the NMB

Collection methods: surface (in situ),

• COLLECTOR: Unknown. REPOSITORY: Museum of Natural History, Basel.

Primary reference: O. Renz. 1982. The Cretaceous ammonites of Venezuela 1-132 [A. Hendy/A. Hendy/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 87993: authorized by Austin Hendy, entered by Austin Hendy on 30.03.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for ammonites. NOMENCLATURE: Authoritative publication, with modern nomenclature, and species-resolution identifications.
Show authors, comments, and common names
Cephalopoda
 Ammonitida - Desmoceratidae
Desmoceras cf. chimuense
Desmoceras cf. chimuense Benavides-Caceres 1956 ammonite
 Ammonitida - Tetragonitidae
"Anagaudryceras buddha" = Anagaudryceras sacya
"Anagaudryceras buddha" = Anagaudryceras sacya Forbes 1846 ammonite
 Ammonitida - Collignoniceratidae
Niceforoceras umbulaziforme
Niceforoceras umbulaziforme Basse 1948 ammonite
 Ammonitida - Acanthoceratidae
Metoicoceras sp., "Acanthoceras (Pseudacanthoceras) wintoni" = Conlinoceras tarrantense
Metoicoceras sp. Hyatt 1903 ammonite
"Acanthoceras (Pseudacanthoceras) wintoni" = Conlinoceras tarrantense Adkins 1928 ammonite