Geisingen/Donau, sample 8 (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: Brasilia bradfordensis brachiopod zone, Opalinus Clay Formation, Middle Aalenian (175.6 - 171.6 Ma)

• Upper Opalinus clay, near boundary beween concavum and murchisonae zones. Bottom centimeters of mudstone above calcareous nodules. =Layer 6 in Dietl & Rieber (1980). Collection 31990 is combination of samples 7 and 8, but they are not separated in that reference.

• bed-level stratigraphic resolution

Environment/lithology: lithified mudstone

Size class: macrofossils

Collected by M. Jager in 1984; 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 139787: authorized by Matthew Clapham, entered by Matthew Clapham on 18.02.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Crinoidea
 Cyrtocrinida - Tetracrinidae
Praetetracrinus doreckae Jäger 1995 Sea lily