Quebrada Asientos, Atacama: Early/Lower Aalenian, Chile
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia
- Pectinida
- Limidae
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Pseudolimea cf. roemeri
(Brauns 1871)
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6 individuals | ||||||
Bivalvia
- Pectinida
- Anomiidae
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Placunopsis radiata
(Phillips 1829)
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1 individual | ||||||
Bivalvia
- Pectinida
- Pectinidae
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Camptonectes (Camptonectes) auritus
(Schlotheim 1813)
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1 individual | ||||||
Bivalvia
- Pectinida
- Propeamussiidae
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Propeamussium (Parvamussium) pumilum
(Lamarck 1819)
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1 individual | ||||||
Bivalvia
- Pholadomyida
- Pholadomyidae
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Pholadomya (Pholadomya) fidicula
(Sowerby 1826)
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Aberhan 2004 | 4 individuals | |||||
Bivalvia
- Pandorida
- Laternulidae
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Cercomy (Cercomya) undulata
Sowerby 1827
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1 individual | ||||||
Bivalvia
- Pholadida
- Ceratomyidae
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Gresslya peregrina
(Phillips 1829)
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Aberhan 2004 | 6 individuals | |||||
original and current combination Unio peregrinus | |||||||
see common names |
Geography
Country: | Chile |
Coordinates: | 26.5° South, 69.3° West (view map) |
Paleocoordinates: | 24.5° South, 33.0° West |
Basis of coordinate: | stated in text |
Geographic resolution: | outcrop |
Time
Period: | Jurassic | Epoch: | Middle Jurassic |
Stage: | Aalenian | 10 m.y. bin: | Jurassic 3 |
Key time interval: | Early/Lower Aalenian | ||
Age range of interval: | 175.60000 - 171.60000 m.y. ago |
Stratigraphy
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: (Early) Aalenian |
Lithology and environment
Primary lithology: | not reported | ||
Environment: | open shallow subtidal | Tectonic setting: | back-arc basin |
Taphonomy
Modes of preservation: | body,mold/impression,original calcite,replaced with silica |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | mechanical,acetic,field collection |
Reason for describing collection: | taxonomic analysis |
Taxonomic list comments:bivalves only |
Metadata
Database number: | 95663 | ||
Authorizer: | M. Aberhan | Enterer: | S. Nurnberg |
Modifier: | S. Nurnberg | Research group: | marine invertebrate |
Created: | 2010-04-21 23:32:52 | Last modified: | 2010-04-22 04:42:49 |
Access level: | the public | Released: | 2010-04-21 23:32:52 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
32459. | M. Aberhan. 1994. Early Jurassic Bivalvia of northern Chile. Part I. Subclasses Palaeotaxodonta, Pteriomorphia, and Isofilibranchia. Beringeria 13:3-115 [M. Aberhan/S. Nurnberg] |
Secondary references:
32394 | M. Aberhan. 2004. Early Jurassic Bivalvia of northern Chile. Part II. Subclass Anomalodesmata. Beringeria 34:117-154 [M. Aberhan/S. Nurnberg/S. Nurnberg] |