Assemblage 2a, La Paragua [Chejendé Mbr, La Luna Fm] (Cretaceous of Venezuela)

Where: Trujillo, Venezuela (9.6° N, 70.3° W: paleocoordinates 2.5° N, 47.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Mammites nodosoides ammonoid zone, Chejendé Member (La Luna Formation), Early/Lower Turonian (93.5 - 89.3 Ma)

• STRATIGRAPHIC RELATIONS: From the Chejendé 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 Turonian, on the basis of ammonoid biostratigraphy; Mammites nodosoides zone. STRATIGRAPHIC POSITION: From assemblages 2a of the Chejendé Mbr.

• 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

Collected by Renz

Collection methods: surface (in situ),

• COLLECTOR: O. Renz. REPOSITORY: Renz coll., Compania, Shell de Venezuela.

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 88036: 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 - Tetragonitidae
Anagaudryceras sp.
Anagaudryceras sp. Shimizu 1934 ammonite
 Ammonitida - Vascoceratidae
"Nannovascoceras sp." = Vascoceras, "Neoptychites xetriformis" = Neoptychites cephalotus, ? Fagesia sp.
"Nannovascoceras sp." = Vascoceras Choffat 1898 ammonite
"Neoptychites xetriformis" = Neoptychites cephalotus Courtiller 1860 ammonite
? Fagesia sp. Pervinquiére 1907 ammonite
 Ammonitida - Acanthoceratidae
"Euomphaloceras (Kanabiceras) septemseriatum" = Euomphaloceras septemseriatum, Kamerunoceras sp., ? Watinoceras aff. coloradoense, Benueites reymenti, Benueites trinidadensis, Mammites spinosus, Mammites nodosoides, Mitonia sp., Mitonia evoluta n. sp.
"Euomphaloceras (Kanabiceras) septemseriatum" = Euomphaloceras septemseriatum Cragin 1893 ammonite
Kamerunoceras sp. Reyment 1954 ammonite
? Watinoceras aff. coloradoense Henderson 1908 ammonite
Benueites reymenti Collignon 1966 ammonite
Benueites trinidadensis Renz 1982 ammonite
Mammites nodosoides Schlüter 1871 ammonite
Mitonia sp. Renz and Alvarez 1979 ammonite
Mitonia evoluta n. sp. Renz 1982 ammonite
 Ammonitida - Coilopoceratidae
Hoplitoides sp., Hoplitoides aff. mirabilis
Hoplitoides sp. von Koenen 1898 ammonite
Hoplitoides aff. mirabilis Pervinquiére 1907 ammonite
 Ammonitida - Diplomoceratidae
Glyptoxoceras cf. indicum
Glyptoxoceras cf. indicum Forbes 1846 ammonite
 Phylloceratida - Phylloceratidae
Phylloceras (Hypophylloceras) cf. masiaposensum