Bed 55, Kernbohrung Wittnau, Baden-Württemberg (Jurassic of Germany)

Where: Germany (48.0° N, 7.8° E: paleocoordinates 37.0° N, 17.6° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Jurensismergel Formation, Levesquei (182.0 - 175.6 Ma)

• Bed at a depth of 99.3 m with a thickness of 0.3 m; insigne-zone; insigne subzone

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, shelly/skeletal claystone

• In the south-german basin (Süddeutsches Becken) located at the northern margin of the Thetys. About 50 km away from shore
• The beds frequently contain accumulated biodetritus, mainly Echinodermata-debris and Bivalve-shell. The marly claystone is subdivided through layers of pyrite nodules, accumulations of limeconcretions and finley distributed Bivalve-(Bositra)-shell, to form a quite disturbed sedimentsuccesion.

Size classes: macrofossils, microfossils

Collection methods: core,

Primary reference: W. Ohmert, V. Allia C. Arias et al. 1996. Die Grenzziehung Unter-/Mitteljura (Toarcium/Aalenium) bei Wittnau und Fuentelsaz [Determinig the boundary between Toarcium/Aalenium near Wittnau and Fuentelsaz]. Informationen Geologisches Landesamt Baden-Württemberg 8:1-52 [W. Kiessling/T. Schossleitner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 59427: authorized by Wolfgang Kiessling, entered by Thomas Schossleitner on 03.04.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Foraminifera
 Lagenina - Robuloididae
Falsopalmula tenuistriata
Nodosariata
 Vaginulinida - Vaginulinidae
Lenticulina dorbignyi
Lenticulina dorbignyi
ssp. dorbignyi
 Nodosariida - Nodosariidae
Citharina clathrata
Foraminifera
 Hormosinacea - Hormosinidae
"Rheophax metensis" = Reophax
"Rheophax metensis" = Reophax
Rhynchonellata
 Rhynchonellida - Rhynchonellidae
"Rhynchonella" sp.
"Rhynchonella" sp. Fischer 1809
Bivalvia
 Pectinida - Limidae
Ctenostreon sp.
Ctenostreon sp. Eichwald 1862 file clam
Cephalopoda
 Ammonitida - Lytoceratidae
Alocolytoceras coarctatum
Alocolytoceras coarctatum Pompeckj 1896 ammonite