Loc. 306, Mussel River [Hectoroceras Beds] (Cretaceous of Greenland)

Where: Greenland (71.1° N, 23.3° W: paleocoordinates 55.7° N, 10.0° E)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Berriasian (145.0 - 139.8 Ma)

• STRATIGRAPHIC RELATIONS: From the lower marl and shale series of the "Hectoroceras beds". AGE: Spath (1947) dated the unit as infra-Valanginian, between the Tithonian and Valanginian (s.s.). This now correlates to the Berriasian stage. STRATIGRAPHIC POSITION: From the concretions near the very top of the lower marl and shale series

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, concretionary, micaceous, sandy shale

• ENVIRONMENT: Presumably offshore, siliciclastic setting.
• SPECIFIC LITHOLOGY: Concretionary, very micaceous sandy shale. LITHIFICATION: Lithified, on the basis of facies and taphonomic descriptions.

Size class: macrofossils

Preservation: cast, mold/impression

Collected by Aldinger & Save-Soderbergh; reposited in the BMNH

Collection methods: surface (in situ),

• COLLECTORS: H. Aldinger and G. Säve-Soderbergh, 1930's. REPOSITORY:BMNH, London.

Primary reference: L. F. Spath. 1947. Additional observations on the invertebrates (chiefly ammonites) of the Jurassic and Cretaceous of East Greenland. Meddeleser om Grønland 132(3):1-69 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 82615: authorized by Austin Hendy, entered by Austin Hendy on 30.07.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for bivalvia, gastropods, cephalopoda and echinodermata. NOMENCLATURE: An authoritative publication, but with somewhat antiquated nomenclature, though generally identified to species resolution.
Cephalopoda
 Ammonitida - Polyptychitidae
Hectoroceras kochi n. sp. Spath 1947 ammonite
 Belemnitida - Belemnitidae
Acroteuthis sp. Stolley 1911 belemnite
Gastropoda
 Sorbeoconcha - Naticidae
Natica sp. Scopoli 1777 moon snail
Bivalvia
 Carditida - Astartidae
Astarte sp. Sowerby 1816 clam
Astarte cf. saemanni de Loriol 1936 clam
 Lucinida - Lucinidae
Lucina aff. fischeriana d'Orbigny 1845 clam
 Trigoniida - Trigoniidae
Trigonia sp. Bruguière 1789 clam
 Ostreida - Gryphaeidae
Exogyra cf. contorta Eichwald 1868 oyster
 Pectinida - Buchiidae
Buchia cf. terebratuloides Lahusen 1888 scallop
Buchia ? volgensis Lahusen 1888 scallop
 Pectinida - Pectinoidae
Camptonectes sp. Meek 1864 scallop
 Pectinida - Entoliidae
 Arcida - Cucullaeidae