Gnaszyn Section C, sample Gns 27 (Jurassic of Poland)

Where: Poland (50.8° N, 19.0° E: paleocoordinates 42.0° N, 26.1° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Retrocostatum ammonoid zone, Late/Upper Bathonian (167.7 - 164.7 Ma)

• Quercinus subzone

• 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 141288: 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 40 specimen.
Bivalvia
 Arcida - Parallelodontidae
Parallelodontidae indet.2 Dall 1898 clam
 Pectinida - Pectinoidae
Pectinidae indet.2 Wilkes 1810 scallop
 Pectinida - Oxytomidae
Oxytoma sp.2 Meek 1864 scallop
 Ostreoida -
"Ostreoida indet." = Ostreida2
"Ostreoida indet." = Ostreida2 Fërussac 1822 oyster
 Ostreida - Pteriidae
Pteriidae indet.2 Gray 1847 pearl oyster
 Carditida - Astartidae
Astartidae indet.2 d'Orbigny 1844 clam
 Pholadida - Corbulidae
Corbulidae indet.2 Lamarck 1818 clam
 Cardiida -
"Veneroida indet." = Veneroidei2
"Veneroida indet." = Veneroidei2 Gray 1854 clam
 Trigoniida - Trigoniidae
Trigoniidae indet.2 Lamarck 1819 clam
 Protobranchia - Nuculanidae
Nuculanidae indet.2 Adams and Adams 1858 pointed nut clam
Gastropoda
  -
Gastropoda indet. Cuvier 1797 snail
 Triphoroidea - Newtoniellidae
Cosmocerithium sp. Cossmann 1906 snail
 Neogastropoda - Turridae
Pseudomelania sp. Pictet and Campiche 1862 turrid
 Stromboidea - Aporrhaidae
Aporrhaidae indet. Gray 1850 snail
 Truncatelloidea - Iravadiidae
Bralitzia sp. Gründel 1998 snail
 Hypsogastropoda - Maturifusidae
 Sorbeoconcha - Cryptaulacidae
 Architectibranchia - Bullinidae
 Allogastropoda - Mathildidae
Mathildidae indet. Dall 1889 snail
 Murchisoniina - Zygopleuridae
Azyga sp. Nützel 1998 snail
 Seguenzioidea - Eucycloscalidae
Eucycloscala sp. Cossmann 1895 snail
 Trochoidea - Trochidae
Parvitomella sp. Gründel 2000 top snail
Scaphopoda
 Dentaliida - Laevidentaliidae
cf. Laevidentalium sp.2 Cossmann 1888 tusk shell
 Dentaliida - Dentaliidae
cf. Plagioglypta sp.2 Pilsbry 1898 tusk shell
cf. Dentalium sp.2 Linnaeus 1758 tusk shell
Crinoidea
  -
Crinoidea indet.1 Miller 1821 Sea lily