Sample AK10, Arnager Limestone Formation, Bornholm (Cretaceous of Denmark)

Where: Denmark (55.1° N, 14.8° E: paleocoordinates 45.1° N, 13.9° E)

• coordinate based on nearby landmark

• hand sample-level geographic resolution

When: Arnager Limestone Formation, Early/Lower Coniacian (89.3 - 85.8 Ma)

• Orbiculiforma vacaensis subzone (Alievium praegallowayi zone); middle Arnager Limestone

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified limestone

• outer shelf to upper slope; maximum water depth in the middle Arnager Limestone Formation
• silica-rich chalk

Size class: microfossils

Collection methods: the macrofauna of the formation comprises inoceramids, belemnites, brachiopods, ammonites and sponges

Primary reference: S. R. Packer and M. B. Hart. 2005. Coniacian-Santonian Radiolaria from the Upper Cretaceous of Bornholm, Denmark: A preliminary investigation. Bulletin of the Geological Society of Denmark 52(2):141-157 [W. Kiessling/U. Merkel/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 62505: authorized by Wolfgang Kiessling, entered by Uta Merkel on 21.07.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Protozoa
 Radiolaria - Ethmosphaeridae
"Cenosphaera" "sp. 1"
"Cenosphaera" "sp. 1" Ehrenberg 1854 radiolarian
 Nassellaria - Eucyrtidiidae
Stichomitra sp., Stichomitra sp.
Stichomitra sp. Cayeux 1897 radiolarian
several species
Stichomitra sp. Cayeux 1897 radiolarian
cf. Amphipyndax stocki
 Nassellaria - Archaeodictyomitridae
Dictyomitra multicostata
Dictyomitra multicostata Zittel 1876 radiolarian
 Nassellaria - Neosciadiocapsidae
Microsciadiocapsa berryessaensis
Microsciadiocapsa berryessaensis Pessagno 1969 radiolarian
 Radiolaria -
Tessarastrum quadratum, Spumellaria indet.
Tessarastrum quadratum radiolarian
listed as Tesserastrum quadratum
Spumellaria indet. Ehrenberg 1875 radiolarian
 Spumellaria - Patulibracchiidae
Patulibracchium sp., Patulibracchium ungulae
Patulibracchium sp. Pessagno 1971 radiolarian
several species
Patulibracchium ungulae Pessagno 1971 radiolarian
 Spumellaria - Archaeospongoprunidae
Archaeospongoprunum sp., Archaeospongoprunum rumseyensis, Archaeospongoprunum bipartitum
Archaeospongoprunum sp. Pessagno 1973 radiolarian
several species
Archaeospongoprunum bipartitum Pessagno 1973 radiolarian
 Spumellaria - Cavaspongiidae
Cavaspongia sp., Cavaspongia antelopensis
Cavaspongia sp. Pessagno 1973 radiolarian
several species
Cavaspongia antelopensis Pessagno 1973 radiolarian
 Spumellaria - Pseudoaulophacidae
Alievium sp., Alievium praegallowayi, Pseudoaulophacus sp., Pseudoaulophacus praefloresensis, Pseudoaulophacus lenticulatus
Alievium sp. Pessagno 1972 radiolarian
several species
Alievium praegallowayi Pessagno 1972 radiolarian
Pseudoaulophacus sp. Pessagno 1963 radiolarian
several species
Pseudoaulophacus praefloresensis Pessagno 1972 radiolarian
Pseudoaulophacus lenticulatus White 1928 radiolarian
 Spumellaria - Orbiculiformidae
Orbiculiforma monticelloensis, ? Orbiculiforma regis, Orbiculiforma persenex, Orbiculiforma aff. impressa, Orbiculiforma vacaensis, Orbiculiforma quadrata, Orbiculiforma multa
Orbiculiforma vacaensis Pessagno 1973 radiolarian
Orbiculiforma quadrata Pessagno 1973 radiolarian
Orbiculiforma multa Kozlova 1966 radiolarian
 Spumellaria - Praeconocaryommidae
Praeconocaryomma californiaensis
Praeconocaryomma californiaensis Pessagno 1976 radiolarian
 Spumellaria - Angulobracchiidae
Paronaella venadoensis
 Spumellaria - Hagiastridae
Crucella sp., Crucella latum, Crucella cf. aster, Crucella espartoensis, Crucella cachensis
Crucella sp. Pessagno 1971 radiolarian
several species
Crucella latum radiolarian
Crucella cf. aster radiolarian
Crucella espartoensis Pessagno 1971 radiolarian
Crucella cachensis Pessagno 1971 radiolarian