Kap Kobenhavn Member B Unit B2 (Pleistocene of Greenland)

Where: Greenland (82.4° N, 21.0° W)

• Paleocoordinates: 82.1° N, 16.7° W (Wright 2013)

• coordinate estimated from map

• local area-level geographic resolution

When: B Member (Kap Kobenhavn Formation), Early/Lower Pleistocene (2.6 - 0.8 Ma)

• thickness varies from 20m to a few meters. both upper and lower contacts are gradiational

• member-level stratigraphic resolution

Environment/lithology: shoreface; unlithified, bioturbated, silty sandstone

• Contains the richest faunas in the Kap Kobenhavn formation and is interpreted to mark an increase in transgression rate or decrease in sediment supply.
• Unit B2 is composed of silty sand which may occur as a massive bioturbated bed or finely laminated with discrete silt beds. The thickness varies from 20m to a few meters. Both the upper and lower contacts are gradational.

Collection methods: faunal list from observation of eight localities (not distinguished) with the most diverse locality "75"

Primary reference: L. A. Simonarson, K.S. Petersen, and S. Funder. 1998. Molluscan palaeontology of the Pliocene-Pleistocene Kap Kobenhavn Formation, North Greenland. Meddelelser om Gronland, Geoscience 36:1-104 [A. Miller/K. Bulinski]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 75099: authorized by Arnold Miller, entered by Kate Bulinski on 23.09.2007

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Gastropoda
 Seguenzioidea - Seguenziidae
Pseudosetia turgida
Pseudosetia turgida Jeffreys 1870 snail
 Trochoidea - Turbinidae
Margarites sp.
Margarites sp. Gray 1847 snail
 Opisthobranchiata - Cylichnidae
Cylichna sp., Cylichna occulta, Cylichna alba
Cylichna sp. Lovén 1846 snail
Cylichna occulta Mighels and Adams 1842 snail
Cylichna alba Brown 1827 white chalice-bubble
 Opisthobranchiata - Retusidae
Retusa obtusa
Retusa obtusa Montagu 1808 snail
 Sorbeoconcha - Naticidae
Natica sp., Lunatia sp., "Lunatia pallida" = Euspira pallida
Natica sp. Scopoli 1777 moon snail
Lunatia sp. Gray 1847 moon snail
"Lunatia pallida" = Euspira pallida Broderip and Sowerby 1829 moon snail
 Neogastropoda - Buccinidae
Buccinum sp., Buccinum cf. undatum
Buccinum sp. Linnaeus 1758 true whelk
Buccinum cf. undatum Linnaeus 1758 true whelk
 Neogastropoda - Mangeliidae
Oenopota sp., "Propebela reticulata" = Curtitoma reticulata, "Oenopota decussata" = Curtitoma decussata
Oenopota sp. Mörch 1852 snail
"Propebela reticulata" = Curtitoma reticulata Brown 1827 snail
"Oenopota decussata" = Curtitoma decussata Couthouy 1839 snail
 Neogastropoda - Cancellariidae
"Admete couthouyi" = Admete viridula
"Admete couthouyi" = Admete viridula Fabricius 1780 admete
 Sorbeoconcha - Rissoidae
Alvania sp., "Boreocingula globula" = Boreocingula globulus, Rissoa parva
Alvania sp. Risso 1826 snail
"Boreocingula globula" = Boreocingula globulus Möller 1842 snail
Rissoa parva da Costa 1778 snail
Bivalvia
 Carditida - Astartidae
"Tridonta elliptica" = Astarte elliptica, "Tridonta soror" = Astarte montagui, "Tridonta borealis" = Astarte borealis
"Tridonta elliptica" = Astarte elliptica Brown 1827 clam
"Tridonta soror" = Astarte montagui Dillwyn 1817 clam
"Tridonta borealis" = Astarte borealis Chemnitz 1784 clam
 Lucinida - Thyasiridae
Axinopsida orbiculata, "Thyasira gouldi" = Thyasira flexuosa
Axinopsida orbiculata Sars 1878 clam
"Thyasira gouldi" = Thyasira flexuosa Montagu 1803 flexuose cleftclam
 Thraciida - Periplomatidae
Cochlodesma sp.
Cochlodesma sp. Couthouy 1839 lantern shells
 Pandorida - Pandoridae
"Pandora glacialis" = Pandora (Pandora) glacialis
"Pandora glacialis" = Pandora (Pandora) glacialis Leach 1819 clam
 Hiatellida - Hiatellidae
Hiatella arctica, Cyrtodaria kurriana
Hiatella arctica Linnaeus 1767 wrinkled rock-borer
Cyrtodaria kurriana Dunker 1861 clam
 Cardiida - Cardiidae
"Serripes groenlandicus" = Serripes (Serripes) groenlandicus, "Clinocardium ciliatum" = Clinocardium (Ciliatocardium) ciliatum
"Serripes groenlandicus" = Serripes (Serripes) groenlandicus Mohr 1786 cockle
"Clinocardium ciliatum" = Clinocardium (Ciliatocardium) ciliatum Fabricius 1780 cockle
 Cardiida - Tellinidae
"Macoma calcarea" = Macoma (Macoma) calcarea, "Macoma balthica" = Macoma (Macoma) balthica, "Macoma moesta" = Macoma (Macoma) moesta
"Macoma calcarea" = Macoma (Macoma) calcarea Gmelin 1792 chalky macoma
"Macoma balthica" = Macoma (Macoma) balthica Linnaeus 1758 Baltic macoma
"Macoma moesta" = Macoma (Macoma) moesta Deshayes 1855 flat macoma
 Cardiida - Montacutidae
"Montacuta dawsoni" = Rochefortia dawsoni
"Montacuta dawsoni" = Rochefortia dawsoni Jeffreys 1864 clam
 Pholadida - Myidae
"Mya truncata" = Mya (Mya) truncata
"Mya truncata" = Mya (Mya) truncata Linnaeus 1758 truncate softshell
 Mytilida - Mytilidae
Mytilus edulis
Mytilus edulis Linnaeus 1758 bay mussel
 Mytilida - Crenellidae
Musculus niger
Musculus niger Gray 1824 mussel
 Arcida - Arcidae
Bathyarca glacialis
Bathyarca glacialis Gray 1824 clam
 Nuculida - Nuculidae
"Nucula nucleus" = Nucula (Nucula) nucleus, "Nucula tenuis" = Ennucula tenuis
"Nucula nucleus" = Nucula (Nucula) nucleus Linnaeus 1758 nut clam
"Nucula tenuis" = Ennucula tenuis Montagu 1808 nut clam
 Nuculanida - Sareptidae
Portlandia arctica
Portlandia arctica Gray 1824 clam
 Nuculanida - Yoldiidae
Yoldiella intermedia, "Yoldiella fraterna" = Yoldiella nana
Yoldiella intermedia Sars 1865 clam
"Yoldiella fraterna" = Yoldiella nana Sars 1865 clam