Furuberget, Cyclocrinus shale (Ordovician to of Norway)

Where: Hamar -Nes, Norway (60.8° N, 11.0° E: paleocoordinates 31.4° S, 9.6° W)

• coordinate estimated from map

When: Cyclocrinus Member (Furuberget Formation), Harnagian to Harnagian (458.4 - 457.2 Ma)

• Cyclocrinus shale = (upper half of) Furuberget Fm, sensu Owen et al. 1990. This is stage 4b∂ in the Norse Ordovician scale.

•Bergström et al. 2011 (GFF 133: 31–47) would move this down to Upper Sandbian

Environment/lithology: marine; shale

Size classes: macrofossils, mesofossils

Primary reference: R. M. Owens. 1970. The middle Ordovician of the Oslo region, Norway 23. The Trilobite Family Proetidae. Norsk Geologisk Tidsskrift 50:309-332 [B. Kröger/B. Kröger/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 162624: authorized by Björn Kröger, entered by Björn Kröger on 30.09.2014, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Proetida - Tropidocoryphidae
Decoroproetus furubergensis Owens 1970 trilobite
 Asaphida - Asaphidae
Isotelus cf. platyrhachis2 Steinhardt 1874 trilobite
 Harpetida - Harpetidae
Paraharpes ottawaensis3 Billings 1865 trilobite
Paraharpes ottawaensis similis
 Odontopleurida - Odontopleuridae
Apianurus abietinus1 Bruton 1965 trilobite
Cephalopoda
 Tarphycerida - Trocholitidae
Discoceras ievesense7 Balaschov 1953
Gastropoda
 Bellerophontida - Bucaniidae
"? Phragmolites reticulata" = Bucania reticulata8
"? Phragmolites reticulata" = Bucania reticulata8 Koken and Perner 1925 snail
Rostroconchia
 Ribeirioida - Ischyriniidae
Ischyrinia norvegica n. sp.4 Soot-Ryen 1960
Bivalvia
 Solemyida - Ctenodontidae
Ctenodonta sp.5 Salter 1852 clam
 Ostreida - Pterineidae
Leptodesma transversa5 Walcott 1884 oyster
 Myalinida - Ambonychiidae
Ambonychia aff. orbicularis5 Emmons 1842 clam
Strophomenata
 Strophomenida - Leptostrophiidae
 Strophomenida - Leptestiidae
"Leangella hamari" = Leangella (Leangella) hamari6
"Leangella hamari" = Leangella (Leangella) hamari6 Spjeldnaes 1957