Zone V1c, Ny Friesland ( of Norway)

Where: Spitsbergen, Norway (79.8° N, 17.8° E: paleocoordinates 5.7° S, 31.9° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Olenidsletta Member (Valhallfonna Formation), Ibexian (487.5 - 470.0 Ma)

• While collections were made throughout section, only ranges of trilobite species are reported. Zone V1c comprises meters 40-75 of the Olenidsletta Member. Likely correlates with part of "zone I" of Ross 1951, Hintze 1951, 1952.

• group of beds-level stratigraphic resolution

Environment/lithology: slope; lithified, black limestone and lithified, black shale

• "The dominant lithologies of this part of the section are finely crystalline black limestones and shales, the former often with perfectly regular fine laminations, having a concoidal fracture and, when broken, emitting a strong, bituminous or sulphureous odor." Fortey 1974

Size class: macrofossils

Collected by R. A. Fortey in 1967

Primary reference: R. A. Fortey. 1980. The Ordovician trilobites of Spitsbergen. III. Remaining trilobites of the Valhallfonna Formation. Norsk Polarinstitutt Skrifter 171:1-163 [M. Hopkins/M. Hopkins]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 106472: authorized by Melanie Hopkins, entered by Melanie Hopkins on 18.03.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

• Lingulids and graptolites also present (see Fortey and Brunton 1973)
Show authors, comments, and common names
Trilobita
 Proetida - Telephinidae
Carolinites genacinaca, Opipeuter inconnivus, Oopsites hibernicus
Carolinites genacinaca Ross 1951 trilobite
subspecies genacinaca
Oopsites hibernicus Reed 1909 trilobite
 Olenida - Olenidae
Balnibarbi erugata, Balnibarbi pulvurea, Cloacaspis dejecta, Svalbardites hamus, Bienvillia stikta
Balnibarbi erugata Fortey 1974 trilobite
Balnibarbi pulvurea Fortey 1974 trilobite
Cloacaspis dejecta Fortey 1974 trilobite
Svalbardites hamus Fortey 1974 trilobite
Bienvillia stikta Fortey 1974 trilobite
 Trinucleida - Alsataspididae
Falanaspis extensa
Falanaspis extensa Fortey 1975 trilobite
 Asaphida - Remopleurididae
Eorobergia "sp. A"
Eorobergia "sp. A" Cooper 1953 trilobite
 Asaphida - Nileidae
Symphysurus arcticus
Symphysurus arcticus Fortey 1975 trilobite
 Ptychopariida - Catillicephalidae
Buttsia inexpectata
Buttsia inexpectata Fortey 1980 trilobite
 Phacopida - Cheiruridae
"Kawina aff. sexapugia" = Forteyops sexapugia
"Kawina aff. sexapugia" = Forteyops sexapugia Ross 1951 trilobite
Artiopoda
 Agnostida - Agnostidae
Micragnostus "sp. A", Micragnostus serus
Micragnostus serus Fortey 1980