Agua de la Mula MO8, Agrio Formation, Neuquén Basin, Neuquén: Early/Lower Hauterivian, Argentina
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ammonitida
- Olcostephanidae
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Olcostephanus (Jeannoticeras) agrioensis
Aguirre-Urreta and Rawson 2001
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| (2 measurements) | ||||||||||
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Olcostephanus (Olcostephanus) laticosta
(Gerth 1925)
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| (3 measurements) | ||||||||||
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Olcostephanus (Olcostephanus) boesei
(Riedel 1938)
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| see common names | ||||||||||
Geography
| Country: | Argentina |
| Coordinates: | 38.1° South, 70.0° West (view map) |
| Paleocoordinates: | 37.6° South, 33.9° West |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
| Stage: | Hauterivian | 10 m.y. bin: | Cretaceous 2 |
| Key time interval: | Early/Lower Hauterivian | ||
| Age range of interval: | 132.60000 - 125.77000 m.y. ago |
Stratigraphy
| Formation: | Agrio | Member: | Lower | ||
| Local section: | Agua de la Mula | Local bed: | MO8 | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Holcoptychites neuquensis zone, Olcostephanus (O.) laticosta subzone | |||||
Lithology and environment
| Primary lithology: | lithified "shale" |
| Lithology description: blue-grey silty shales, weathering greenish; numerous small nodules; 9.1 m | |
| Environment: | transition zone/lower shoreface |
| Geology comments: shoreface to offshore paleoenvironments on a storm-dominated, shallow marine ramp | |
Taphonomy
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 61703 | ||
| Authorizer: | W. Kiessling | Enterer: | U. Merkel | Research group: | marine invertebrate |
| Created: | 2006-06-23 02:21:17 | Last modified: | 2006-06-23 05:21:17 |
| Access level: | the public | Released: | 2006-06-23 02:21:15 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 17762. | M. B. Aguirre-Urreta and P. F. Rawson. 2001. Lower Cretaceous ammonites from the Neuquén Basin, Argentina: a Hauterivian Olcostephanus fauna. Cretaceous Research 22(6):763-778 [W. Kiessling/U. Merkel] |