Assemblage 2a, La Paragua [Chejendé Mbr, La Luna Fm]: Early Turonian, Venezuela
collected by Renz
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Cephalopoda
- Phylloceratida
- Phylloceratidae
|
|||||||
|
Phylloceras (Hypophylloceras) cf. masiaposensum
|
|||||||
|
Cephalopoda
- Ammonitida
- Diplomoceratidae
|
|||||||
|
Glyptoxoceras cf. indicum
(Forbes 1846)
|
|||||||
|
Cephalopoda
- Ammonitida
- Vascoceratidae
|
|||||||
|
? Fagesia sp.
Pervinquiére 1907
|
|||||||
|
Nannovascoceras sp.
Renz and Alvarez 1979
|
|||||||
|
Neoptychites xetriformis
Pervinquiére 1907
|
|||||||
|
Cephalopoda
- Ammonitida
- Acanthoceratidae
|
|||||||
|
? Watinoceras aff. coloradoense
(Henderson 1908)
|
|||||||
|
Benueites trinidadensis
Renz 1982
|
|||||||
|
Benueites reymenti
Collignon 1966
|
|||||||
|
Mitonia sp.
Renz and Alvarez 1979
|
|||||||
|
Mitonia evoluta n. sp.
Renz 1982
|
|||||||
|
Mammites nodosoides
(Schlüter 1871)
|
|||||||
|
Mammites spinosus
(Basse 1940)
|
|||||||
|
Kamerunoceras sp.
Reyment 1954
|
|||||||
|
Euomphaloceras (Kanabiceras) septemseriatum
(Cragin 1893)
|
|||||||
|
Cephalopoda
- Ammonitida
- Coilopoceratidae
|
|||||||
|
Hoplitoides sp.
von Koenen 1898
|
|||||||
|
Hoplitoides aff. mirabilis
Pervinquiére 1907
|
|||||||
|
Cephalopoda
- Ammonitida
- Tetragonitidae
|
|||||||
|
Anagaudryceras sp.
Shimizu 1934
|
|||||||
| see common names | |||||||
Geography
| Country: | Venezuela | State/province: | Trujillo |
| Coordinates: | 9.6° North, 70.3° West (view map) | ||
| Paleocoordinates: | 2.5° North, 47.5° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Turonian | 10 m.y. bin: | Cretaceous 6 |
| Key time interval: | Early Turonian | Ammonoid zone: | Mammites nodosoides |
| Age range of interval: | 93.9 - 89.8 m.y. ago |
Stratigraphy
| Formation: | La Luna | Member: | Chejendé | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: 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. | |||||
Lithology and environment
| Primary lithology: | lithified "siliciclastic" |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Not stated, but presumably siliciclastic. LITHIFICATION: Lithified, on the basis of figured specimens. | |
| Environment: | marine indet. |
| Geology comments: ENVIRONMENT: Not stated, but said to be facies which become euxinic, from a shale lateral equivalent. | |
Taphonomy
| Modes of preservation: | mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | surface (in situ),survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Collectors: | Renz |
| Collection method comments: COLLECTOR: O. Renz. REPOSITORY: Renz coll., Compania, Shell de Venezuela. | |
| Taxonomic list comments:COVERAGE: Exhaustive for ammonites. NOMENCLATURE: Authoritative publication, with modern nomenclature, and species-resolution identifications. | |
Metadata
| Database number: | 88036 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2009-03-30 16:59:21 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2009-03-30 16:59:21 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 29557. | O. Renz. 1982. The Cretaceous ammonites of Venezuela 1-132 [A. Hendy/A. Hendy/P. Wagner] |