Bonarka (Cretaceous of Poland)

Where: Poland (50.0° N, 20.0° E: paleocoordinates 40.5° N, 18.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Early/Lower Campanian (83.5 - 70.6 Ma)

• group of beds-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 110329: authorized by Wolfgang Kiessling, entered by Uta Merkel on 06.06.2011, edited by Mihaela Krause

Creative Commons license: CC BY (attribution)

Taxonomic list

Calcarea
 Lithonida - Minchinellidae
Porosphaera globularis2 Phillips 1829 calcareous sponge
Hexactinellida
 Hexactinosa - Aphrocallistidae
Aphrocallistes alveolites1 Roemer 1841 glass sponge
 Lychniscosa - Ventriculitidae
Rhizopoterion tubiforme1 Schrammen 1912 glass sponge
Ventriculites radiatus1 Mantell 1822 glass sponge
Lepidospongia fragilis1 Schrammen 1902 glass sponge
Sporadoscinia micrommata1 Roemer 1841 glass sponge
 Lychniscosa - Coeloptychidae
Coeloptychium deciminum1 Roemer 1841 glass sponge
Demospongiae
 Tetralithistida - Theonellidae
Ragadinia rimosa Roemer 1864 demosponge
 Spirosclerophorida - Scleritodermatidae
 Megalithistida - Pleromatidae
Brochodora ramusculus Schrammen 1910 demosponge
Brochodora roemeri Hinde 1884 demosponge
 Megalithistida - Carterellidae
Pachycothon giganteum Roemer 1864 demosponge