Quebrada Asientos, Atacama (Jurassic of Chile)

Where: Chile (26.5° S, 69.3° W: paleocoordinates 24.5° S, 33.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Early/Lower Aalenian (175.6 - 171.6 Ma)

• (Early) Aalenian

• group of beds-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithology not reported

Size class: macrofossils

Preservation: mold/impression, original calcite, replaced with silica

Collection methods: mechanical, acetic,

Primary reference: M. Aberhan. 1994. Early Jurassic Bivalvia of northern Chile. Part I. Subclasses Palaeotaxodonta, Pteriomorphia, and Isofilibranchia. Beringeria 13:3-115 [M. Aberhan/S. Nurnberg]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 95663: authorized by Martin Aberhan, entered by Sabine Nürnberg on 21.04.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• bivalves only
Bivalvia
 Pectinida - Limidae
Pseudolimea cf. roemeri Brauns 1871 file clam
 Pectinida - Anomiidae
Placunopsis radiata Phillips 1829 scallop
 Pectinida - Pectinoidae
Camptonectes (Camptonectes) auritus Schlotheim 1813 scallop
 Pectinida - Propeamussiidae
Propeamussium (Parvamussium) pumilum Lamarck 1819 mud scallop
 Pholadomyida - Pholadomyidae
 Pandorida - Laternulidae
Cercomy (Cercomya) undulata Sowerby 1827 clam
 Pholadida - Ceratomyidae
Gresslya peregrina Phillips 1829 clam