Geisingen/Donau, sample 7 (Jurassic of Germany)

Where: Germany (47.9° N, 8.7° E: paleocoordinates 37.5° N, 18.3° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Opalinus Clay Formation, Early/Lower Aalenian (175.6 - 171.6 Ma)

• Upper Opalinus clay, near boundary beween concavum and murchisonae zones, but said to be upper Lower Aalenian. Marl a few cm to a few dm above basal rubble-rich lime bank. Collection 31990 is combination of samples 7 and 8, but they are not separated in that reference.

• bed-level stratigraphic resolution

Environment/lithology: lithified marl

Size class: macrofossils

Collected by M. Jager in 1990; reposited in the SMNS

Primary reference: M. Jäger. 1995. Echinodermata aus dem Ober-Toarcium und Aalenium Deutschlands I. Crinoidea: Cyrtocrinina und Millericrinina. Stuttgarter Beiträge zur Naturkunde Serie B (Geologie und Paläontologie) 226:1-51 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 139786: authorized by Matthew Clapham, entered by Matthew Clapham on 18.02.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Crinoidea
 Millericrinida - Millericrinidae
 Millericrinida - Plicatocrinidae
Plicatocrinidae indet. Zittel 1879 Sea lily
Praetetracrinus? or ?Tetracrinus n. sp.
Praetetracrinus kutscheri Jäger 1995 Sea lily
Praetetracrinus doreckae n. gen. n. sp. Jäger 1995 Sea lily