Gnaszyn Section B, sample Gns16A (Jurassic of Poland)

Where: Poland (50.8° N, 19.0° E: paleocoordinates 42.1° N, 26.1° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Morrisi ammonoid zone, Middle Bathonian (167.7 - 164.7 Ma)

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; poorly lithified, black claystone

• deep-water and soft-bottom environments

Size classes: macrofossils, mesofossils, microfossils

Collection methods: sieve,

• The samples (approx. 5kg each) were taken from each lithologically distinct horizon of the succession. They were washed with hot water and washing powder on a sieve (mesh size 0.375 mm) and fossils were picked from residues under the microscope

Primary reference: A. Kaim. 2012. Faunal dynamics of Gastropods in the Bathoninan (Middle Jurrasic) ore-bearing clays at Gnaszyn, Krakow-Silesia Homocline, Poland. Acta Palaeontologica Polonica 62(3):367-380 [M. Aberhan/T. Schossleitner]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 141296: authorized by Martin Aberhan, entered by Thomas Schossleitner on 23.03.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
  -
Bivalvia indet.1 Linnaeus 1758 clam
 Pectinida - Oxytomidae
Oxytomidae indet.1 Ichikawa 1958 scallop
 Protobranchia - Nuculanidae
Nuculanidae indet.1 Adams and Adams 1858 pointed nut clam
Gastropoda
 Triphoroidea - Newtoniellidae
Cosmocerithium sp. Cossmann 1906 snail
 Truncatelloidea - Iravadiidae
Bralitzia sp. GrĂ¼ndel 1998 snail
 Architectibranchia - Bullinidae
 Allogastropoda - Mathildidae
Mathildidae indet. Dall 1889 snail
Scaphopoda
 Dentaliida - Laevidentaliidae
cf. Laevidentalium sp.1 Cossmann 1888 tusk shell
Chondrichthyes
 Galeomorphi -
Orectolobiformes indet.2 Applegate 1972 carpet shark
2 teeth