Schinznach, lower Opalinus Clay, Canton Aargau (Jurassic of Switzerland)

Where: Switzerland (47.5° N, 8.2° E: paleocoordinates 36.9° N, 17.9° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Opalinus Clay Formation, Opalinum (175.6 - 171.6 Ma)

• From multiple horizons in the lower 25 m of the Opalinus Clay. Horizons almost certainly are those in Etter (1990) but are not stated.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified mudstone

Size class: macrofossils

Preservation: adpression

Collected by W. Etter in 1985-1988

• Repository: PIMUZ (Paleontological Institute and Museum, University of Zurich)

Primary reference: W. Etter. 2004. Decapod crustaceans from the Middle Jurassic Opalinus Clay of northern Switzerland, with comments on crustacean taphonomy. Eclogae Geologicae Helvetiae 97:381-392 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 138777: authorized by Matthew Clapham, entered by Matthew Clapham on 27.01.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Malacostraca
 Decapoda - Glypheidae
Glyphea sp. Von Meyer 1835 decapod
23 m above base
 Decapoda - Mecochiridae
Mecochirus cf. eckerti Frentzen 1937 decapod
from lower 25 m
 Decapoda - Erymidae
Eryma sp. Von Meyer 1840 decapod
from lowermost 15 m