Frognøya, Sørbakken Fm (Ordovician to of Norway)

Where: Ringerike, Norway (60.0° N, 10.2° E: paleocoordinates 30.3° S, 9.6° W)

• coordinate estimated from map

When: Sørbakken Formation, Pusgillian to Pusgillian (449.5 - 445.6 Ma)

• "Trinucleus limestone (4c)", in Strand (1934)

•"Isotelus limestone (4d)", in Strand (1934)

•"Isotelus Beds"(4d)", in Toni (1975)

Environment/lithology: marine; limestone

Size classes: macrofossils, mesofossils

Primary reference: J. F. Bockelie. 1984. The Diploporita of the Oslo region, Norway. Palaeontology 27(1):1-68 [A. Miller/P. Novack-Gottshall/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 163026: authorized by Björn Kröger, entered by Björn Kröger on 09.10.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Corynexochida - Styginidae
Stygina minor5 Skjeseth 1955 trilobite
Stygina aff. minor3 Skjeseth 1955 trilobite
Stygina latifrons5 Portlock 1843 trilobite
Stygina latifrons extensa
 Corynexochida - Illaenidae
Illaenus (Parillaenus) roemeri1 Volborth 1864 trilobite
 Odontopleurida - Odontopleuridae
Primaspis bucculenta5 McNamara 1979 trilobite
Primaspis (Primaspis) bucculenta
Primaspis evoluta3 Törnquist 1884 trilobite
 Aulacopleurida - Holotrachelidae
Holotrachelus punctillosus5 Törnquist 1884 trilobite
 Phacopida - Pterygometopidae
Calyptaulax aff. norvegicus5 Stormer 1945 trilobite
Calyptaulax norvegicus3 Stormer 1945 trilobite
Chasmops sp.3 McCoy 1849 trilobite
 Phacopida - Encrinuridae
Erratencrinurus kiaeri5 Owen 1981 trilobite
Erratencrinurus (Celtencrinurus) kiaeri
Cybeloides (Paracybeloides) sp.5 Hupe 1955 trilobite
Atractopyge sp.5 Hawle and Corda 1847 trilobite
 Phacopida - Cheiruridae
Sphaerexochus sp.5 Beyrich 1845 trilobite
 Phacopida - Calymenidae
Flexicalymene trinucleina3 Tullberg 1882 trilobite
 Asaphida - Asaphidae
Isotelus sp.3 Dekay 1824 trilobite
Isotelus frognoensis5 Owen 1981 trilobite
 Asaphida - Remopleurididae
 Asaphida - Trinucleidae
Tretaspis sp.3 McCoy 1849 trilobite
Tretaspis anderssoni4 Stormer 1945 trilobite
Tretaspis hisingeri4 Owen 1980 trilobite
Tretaspis seticornis3 Hisinger 1840 trilobite
Tretaspis seticornis anderssoni
Bivalvia
 Cyrtodontida - Cyrtodontidae
Cyrtodontula ventricosa7 Hall 1847 clam
 Myalinida - Ambonychiidae
Cleionychia sp.7 Ulrich 1892 clam
Cleionychia cf. primitiva7 Isberg 1934 clam
Gastropoda
 Bellerophontida - Sinuitidae
Sinuites usitatus2 Isakar 1991 snail
Cephalopoda
 Orthocerida - Proteoceratidae
"Geisonoceras heroyense" = Isorthoceras heroyense6 Strand 1934
 Orthocerida - Orthoceratidae
Orthoceras sp.6 Breynius 1832
 Orthocerida - Sinoceratidae
Tyrioceras kjerulfi6 Strand 1934
 Orthocerida - Geisonoceratidae
Geisonoceras heintzi6 Strand 1934
 Discosorida - Cyrtogomphoceratidae
"Protophragmoceras tyriense" = Strandoceras tyriense6, Kiaeroceras frognoyense6
"Protophragmoceras tyriense" = Strandoceras tyriense6 Strand 1934
 Barrandeocerida - Barrandoceratidae
 Endocerida - Endoceratidae
 Actinocerida -
Sactoceras tyriense6 Strand 1934
 Tarphycerida - Trocholitidae
Discoceras roemeri6 Strand 1934
 Oncocerida - Diestoceratidae
Danoceras sp.6 Troedsson 1926
 Oncocerida - Jovellaniidae
Diploporita
  - Sphaeronitidae