Arnager Greensand Formation, Arnager-Madsegrav, Bornholm (Cretaceous to of Denmark)

Where: Denmark (55.1° N, 14.8° E: paleocoordinates 44.4° N, 13.4° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Arnager Greensand Formation, Early/Lower Cenomanian to Early/Lower Cenomanian (99.6 - 93.5 Ma)

• 'Inocermid fauna of the basal part of the greensand... the Arnager Greensand s. str. can be referred to the lower Middle Cenomanian on ammonite and inoceramid bivalve evidences... on foraminiferal evidence, the basal 5 m of the greensand is from the Lower Cenomanian'

• group of beds-level stratigraphic resolution

Environment/lithology: shoreface; poorly lithified, bioturbated, glauconitic sandstone

• classification based on high bioturbation
• 'poorly sorted, glauconitic quartz sand... the greensand is unconsolidated except for a few cemented beds in the basal part and is heavily bioturbated.'

Size class: macrofossils

Preservation: mold/impression

Collection methods: Museum repositories: MGUH, GM, MMH and MM

Primary reference: T. Birkelund. 1957. Upper Cretaceous belemnites from Denmark. Biologiske Skrifter. Det Kongelige Danske Viden-skabernes Selskab 9(1):1-69 [M. Aberhan/S. Nurnberg/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 69975: authorized by Martin Aberhan, entered by Sabine Nürnberg on 14.03.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• fragments are not included in abundace data of belemnites
Bivalvia
 Myalinida - Inoceramidae
Inoceramus crippsi2 Mantell 1822 clam
incl. I. crippsi subsp. indet. and I. cripssi hoppenstedtensis
Cephalopoda
 Belemnitida - Belemnitellidae
 Ammonitida - Turrilitidae
Turrilites scheuchzerianus1 Bosc 1801 ammonite
 Ammonoidea - Schloenbachiidae
Schloenbachia cf. varians1 Sowerby 1817 ammonite
Schloenbachia varians1 Sowerby 1817 ammonite
incl. S. varians varians, S. varians aff. subtuberculata and S. varians subvarians
Schloenbachia aff. varians1 Sowerby 1817 ammonite
S. aff. varians varians
 Ammonoidea - Acanthoceratidae
Acanthoceras rhotomagense1 Brongniart 1822 ammonite
A. rhotomagense sussexiense