Quebrada del Pobre, Valparaiso (Jurassic of Chile)

Where: Chile (32.4° S, 71.2° W: paleocoordinates 35.0° S, 31.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Late/Upper Sinemurian (196.5 - 189.6 Ma)

• Late Sinemurian?

• 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,

• collected since 1966

Primary reference: E. Pérez, M. Aberhan, R. Reyes and A. Hillebrandt. 2008. Early Jurassic Bivalvia of northern Chile. Part III. Order Trigonioida. Beringeria 39:51-102 [M. Aberhan/S. Nurnberg/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 95100: authorized by Martin Aberhan, entered by Sabine Nürnberg on 06.04.2010, edited by Bethany Allen

Creative Commons license: CC BY (attribution)

Taxonomic list

• trigonioids only
Cephalopoda
 Ammonitida - Arietitidae
Gastropoda
 Pleurotomarioidea - Pleurotomariidae
Pleurotomaria sp. Defrance 1826 snail
Bivalvia
 Pectinida - Oxytomidae
Oxytoma sp. Meek and Hayden 1865 scallop
 Pholadida - Ceratomyidae
Gresslya sp. Agassiz 1843 clam
 Pholadida - Pleuromyidae
Pleuromya sp. Meek 1873 clam
 Trigoniida - Myophorelloidae
Jaworskiella gryphitica Möricke 1894 clam
 Trigoniida - Groeberellidae
Groeberella neuquensis Groeber 1924 clam
Malacostraca
 Decapoda -
Cardinia sp. Edwards 1837 decapod