Piotrawin (Cretaceous of Poland)

Where: Poland (51.1° N, 21.8° E: paleocoordinates 43.5° N, 18.5° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Early/Lower Maastrichtian (70.6 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified marl

Size class: macrofossils

Primary reference: H. Hurcewicz. 1966. Siliceous sponges from the Upper Cretaceous of Poland, part 1: Tetraxonia. Acta Palaeontologica Polonica 11(1):15-129 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 110338: authorized by Wolfgang Kiessling, entered by Uta Merkel on 06.06.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Hexactinellida
 Lychniscosa - Ventriculitidae
Orthodiscus fragilis Schrammen 1924 glass sponge
Rhizopoterion coniforme n. sp. Hurcewicz 1968 glass sponge
 Hexactinosa - Aphrocallistidae
Aphrocallistes mammillaris n. sp. Hurcewicz 1968 glass sponge
Aphrocallistes kazimierzensis Hurcewicz 1968 glass sponge
Demospongiae
 Tetralithistida - Siphoniidae
Turonia aff. variabilis Michelin 1847 demosponge