Bed 50, Sunchubamba section: Early/Lower Albian, Peru
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Trigoniida
- Megatrigoniidae
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Pterotrigonia tocaimaana
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Bivalvia
- Trigoniida
- Steinmanellidae
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Yaadia hondoana
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Bivalvia
- Trigoniida
- Trigoniidae
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Buchotrigonia abrupta
(von Buch 1838)
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Cephalopoda
- Ammonitida
- Acanthohoplitidae
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Parahoplites nicholsoni n. sp.
Benavides-Caceres 1956
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| recombined as Neodeshayesites nicholsoni | ||||||||||
| (1 measurement) | ||||||||||
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Parahoplites quilla
Benavides-Caceres 1956
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| nomen dubium belonging to Neodeshayesites | ||||||||||
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Parahoplites inti
Benavides-Caceres 1956
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| recombined as Neodeshayesites inti | ||||||||||
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Cephalopoda
- Ammonitida
- Desmoceratidae
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Desmoceras chimuense
Benavides-Caceres 1956
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Cephalopoda
- Ammonitida
- Knemiceratidae
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Knemiceras ollonense
(Gabb 1877)
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| recombined as Glottoceras ollonense | ||||||||||
| (1 measurement) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Peru |
| Coordinates: | 7.4° South, 78.4° West (view map) |
| Paleocoordinates: | 11.7° South, 49.0° West |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
| Stage: | Albian | 10 m.y. bin: | Cretaceous 4 |
| Key time interval: | Early/Lower Albian | ||
| Age range of interval: | 113.00000 - 109.90000 m.y. ago |
Stratigraphy
| Formation: | Inca | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: LITHOSTRATIGRAPHY: From the Inca Fm, which overlies the Goyllarisquisga Fm (Aptian), and is overlain by the Chulec Fm (Albian). AGE: Early Albian, on the basis of ammonite biostratigraphy; Parahoplites nicholsoni. | |||||
Lithology and environment
| Primary lithology: | lithified "shale" |
| Lithology description: Shale, dark gray to black, laminated, soft, fossiliferous | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (in situ),field collection,survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | AMNH |
| Collection method comments: COLLECTOR: V. E. Benavides. REPOSITORY: AMNH. | |
| Taxonomic list comments:COVERAGE: Exhaustive for ammonoids, bivalves, and other invertebrates groups. NOMENCLATURE: Authoritative publication, but with somewhat antiquated nomenclature, and species-resolution identifications. | |
Metadata
| Database number: | 158985 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2014-07-24 00:13:54 | Last modified: | 2017-05-23 16:34:15 |
| Access level: | the public | Released: | 2014-07-24 00:13:54 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 15338. | V.E. Benavides-Caceres. 1956. Cretaceous system in northern Peru. Bulletin of the American Museum of Natural History 108(4):1-493 [A. Miller/A. Hendy] |