Cerro de La Parva, Agrio Formation, 33m (P11), Neuquen Basin: Late/Upper Valanginian - Early/Lower Hauterivian, Argentina
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Malacostraca
- Decapoda
|
||||||||||
Meyerella rapax
|
||||||||||
Cephalopoda
- Ammonitida
- Neocomitidae
|
||||||||||
Karakaschiceras attenuatus
(Behrendsen 1892)
|
||||||||||
(1 measurement) | ||||||||||
Bivalvia
- Hiatellida
- Hiatellidae
|
||||||||||
Panopea sp.
(Menard 1807)
|
||||||||||
see common names |
Geography
Country: | Argentina |
Coordinates: | 37.3° South, 70.5° West (view map) |
Paleocoordinates: | 36.7° South, 34.1° West |
Basis of coordinate: | estimated from map |
Geographic resolution: | outcrop |
Time
Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
Key time interval: | Late/Upper Valanginian - Early/Lower Hauterivian | ||
Age range of interval: | 139.80000 - 125.77000 m.y. ago |
Stratigraphy
Geological group: | Mendoza | Formation: | Agrio | Member: | Lower |
Local section: | Cerro de La Parva | Local bed: | 33 m | ||
Local order: | top to bottom | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: = horizon P11 |
Lithology and environment
Primary lithology: | lithified silty "shale" |
Lithology description: hard silty shales with a nodular bed | |
Environment: | transition zone/lower shoreface |
Glacial or sequence phase: | transgressive |
Geology comments: ' A transgressive phase started in mid-Valanginian time with the deposition of black shales and limestones of the Argio Fm.'
'shoreface to offshore paleoenvironments on a storm-dominated, shallow marine ramp' (see PBDB coll. 50185) |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | field collection |
Reason for describing collection: | taxonomic analysis |
Metadata
Database number: | 65447 | ||
Authorizer: | M. Aberhan | Enterer: | S. Nurnberg |
Modifier: | J. Fearon | Research group: | marine invertebrate |
Created: | 2006-09-22 06:55:55 | Last modified: | 2024-02-20 23:26:43 |
Access level: | the public | Released: | 2006-09-22 06:55:55 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
18861. | M. B. Aguirre-Urreta. 1998. The ammonites Karakaschiceras and Neohoploceras (Valanginian Neocomitidae) from the Neuquen Basin, West-Central Argentina. Journal of Paleontology 72:39-59 [M. Aberhan/S. Nurnberg] |