Court Röschenz Beds, Jura Mountains (Jurassic to of Switzerland)

Where: Switzerland (47.2° N, 7.3° E: paleocoordinates 38.2° N, 16.3° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Röschenz Member (Vellerat Formation), Middle Oxfordian to Middle Oxfordian (161.2 - 155.7 Ma)

• Röschenz Beds formerly known as the Natica Beds (Gygi, 1995)

•the deposits from which the flora was collected are situated in a facies transition from the Günsberg to Röschenz Beds.

• bed-level stratigraphic resolution

Environment/lithology: coastal; claystone and marl

• Detrital quartz grains and mud cracks present.

•Deposits are entirely marine with mainly oolites and pellets in the lower half of the section and marly, lagoonal limestones, containing red oncolites and bioclasts (mainly large gastropods) in the upper half). The material was collected from this facies transition.

Size classes: macrofossils, microfossils

Preservation: mold/impression, adpression, original carbon, original sporopollenin, original cellulose

Collection methods: bulk, chemical, mechanical, peel or thin section, sieve,

• Specimens stored in the Natur Museum Solothurn, the sedimentological samples are stored at the Geological Institute of the University of Basel.

Primary reference: R. Allenbach and J.H.A. van Konijnenburg-van Cittert. 1997. On a small flora with Araucariaceous conifers from the Röschenz Beds of Court, Jura Mountains, Switzerland. Eclogae geol. Helv. 90:571-579 [C. Looy/F. Verbruggen/F. Verbruggen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 31288: authorized by Cindy Looy, entered by Frederike Verbruggen on 01.05.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

• Araucariaceous species
Chlorophyceae
  -
Botryococcus indet. Kutzing 1849
1 specimen
unclassified
  -
? Plantae indet. Haeckel 1866
indet. a, 15 smooth trilete, more or less triangular fern spores
? Plantae indet. Haeckel 1866
indet. a, 6 trilete, spherical, fern spores
? Plantae indet. Haeckel 1866
20 bisaccate pollen grains from conifers or pheridosperms
Masculostrobus
  -
Masculostrobus graiterensis n. sp.
includes whole specimens
Pinopsida
 Pinales - Araucariaceae
Araucariacites indet. Cookson and Couper 1953
>350 pollen grains
Araucarites falsanii
(SAPORTA) BARALE
Pagiophyllum cirinicum
(SAPORTA) HEER emend. Barale
 Pinales -
Callialasporites indet. Dev 1961
>350 pollen grains
Monocotyledoneae
  -
Monosulcites indet. Cookson and Couper 1953
1 grain
Pteridopsida
 Schizaeales - Schizaeaceae
Klukisporites indet. Couper 1958
indet. c, 2 spores
 Gymnospermophyta -
Perinopollenites indet. Couper 1958
5 grains
Pinidae
 Cupressales - Pinidae
Spheripollenites indet. Couper 1958
25 pollen grains