Quebrada Asientos, Atacama: Early/Lower Aalenian, Chile

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Pectinida - Limidae
Pseudolimea cf. roemeri (Brauns 1871)
6 individuals
Bivalvia - Pectinida - Anomiidae
Placunopsis radiata (Phillips 1829)
1 individual
Bivalvia - Pectinida - Pectinidae
Camptonectes (Camptonectes) auritus (Schlotheim 1813)
1 individual
Bivalvia - Pectinida - Propeamussiidae
Propeamussium (Parvamussium) pumilum (Lamarck 1819)
1 individual
Bivalvia - Pholadomyida - Pholadomyidae
Pholadomya (Pholadomya) fidicula (Sowerby 1826)
Aberhan 2004 4 individuals
Bivalvia - Pandorida - Laternulidae
Cercomy (Cercomya) undulata Sowerby 1827
1 individual
Bivalvia - Pholadida - Ceratomyidae
Gresslya peregrina (Phillips 1829)
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]