Gnaszyn Section A, sample Gns34 (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: 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 141267: authorized by Martin Aberhan, entered by Thomas Schossleitner on 23.03.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

• Numbers of specimen of gastropodes, bivalves, scaphopodes and shark teeth are explicitely stated, number of echinoderms is roughly based on proportional plots; total number of echinoderms within this collection is 67 specimen.
Echinoidea
  -
Echinoidea indet.1 Leske 1778 sea urchin
Holothuroidea
 Apodida - Achistridae
Achistrum sp.1 Etheridge 1881 sea cucumber
Ophiuroidea
  -
Ophiuroidea indet.1 Gray 1840 brittle star
Crinoidea
  -
Crinoidea indet.1 Miller 1821 Sea lily
Chondrichthyes
 Synechodontiformes - Orthacodontidae
Sphenodus sp.4 Agassiz 1843 elasmobranch
Scaphopoda
 Dentaliida - Dentaliidae
cf. Plagioglypta sp.3 Pilsbry 1898 tusk shell
cf. Dentalium sp.3 Linnaeus 1758 tusk shell
 Dentaliida - Laevidentaliidae
cf. Laevidentalium sp.3 Cossmann 1888 tusk shell
Gastropoda
 Heterostropha - Mathildidae
Mathildidae indet. Dall 1889 snail
 Heterostropha - Bullinidae
 Heterostropha - Cornirostridae
Bandellina riedeli Gründel 1998 snail
 Murchisoniina - Zygopleuridae
Azyga sp. Nützel 1998 snail
 Seguenzioidea - Eucyclidae
Eucycloscala sp. Cossmann 1895 snail
 Trochoidea - Skeneidae
Eudaronia pusilla Gründel 2000 snail
 Cerithioidea - Cryptaulacidae
 Sorbeoconcha - Iravadiidae
Bralitzia sp. Gründel 1998 snail
Bivalvia
  -
Bivalvia indet.3 Linnaeus 1758 clam
 Nuculanida - Nuculanidae
Nuculanidae indet.3 Adams and Adams 1858 pointed nut clam
 Myalinida - Inoceramidae
Inoceramidae indet.3 Giebel 1852 clam
 Pectinida - Oxytomidae
Oxytomidae indet.3 Ichikawa 1958 scallop
 Arcida - Parallelodontidae
Parallelodontidae indet.3 Dall 1898 clam
 Cardiida - Kalenteridae
Myoconcha crassa2 Sowerby 1824 clam
 Cardiida -
"Veneroida indet." = Veneroidei3
"Veneroida indet." = Veneroidei3 Gray 1854 clam
 Pholadida - Corbulidae
Corbulidae indet.3 Lamarck 1818 clam
 Carditida - Astartidae
Astartidae indet.3 d'Orbigny 1844 clam
 Trigoniida - Trigoniidae
Trigoniidae indet.3 Lamarck 1819 clam