PBDB Collection

Raudskjer, Nakkholmen Fm (Ordovician of Norway)

Also known as Raudskjera

Where: Norway (59.8° N, 10.5° E: paleocoordinates 31.8° S, 9.7° W)

• coordinate estimated from map

When: Nakkholmen Formation, Oandu (453.0 - 451.8 Ma)

Environment/lithology: marine; limestone and shale

Size classes: macrofossils, mesofossils

Primary reference: D. L. Bruton and A. W. Owen. 1979. Late Caradoc - early Asghill trilobite distribution in the central Oslo Region, Norway. Norsk Geologisk Tidsskrift 59:213-222 [B. Kröger/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 162532: authorized by Björn Kröger, entered by Björn Kröger on 29.09.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

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Artiopoda
Agnostida - Metagnostidae	Trinodus tardus, Trinodus aff. tardus Trinodus tardus Barrande 1846 Trinodus aff. tardus Barrande 1846
Trilobita
Phacopida - Pterygometopidae	Chasmops extensa, Calyptaulax norvegicus, Calyptaulax aff. norvegicus Chasmops extensa Boeck 1838 trilobite Calyptaulax norvegicus Stormer 1945 trilobite Calyptaulax aff. norvegicus Stormer 1945 trilobite
Phacopida - Encrinuridae	Staurocephalus sp., Staurocephalus pilafrons, Deacybele gracilis Staurocephalus sp. Barrande 1846 trilobite Staurocephalus pilafrons Owen and Bruton 1980 trilobite Deacybele gracilis Nikolaisen 1961 trilobite
Phacopida - Cheiruridae	Pseudosphaerexochus bulbosus, Sphaerocoryphe sp. Pseudosphaerexochus bulbosus Nikolaisen 1965 trilobite Sphaerocoryphe sp. Angelin 1854 trilobite
Phacopida - Calymenidae	"Flexicalymene jemtlandica" = Flexicalymene (Onnicalymene) jemtlandica, "Prionocheilus narinosus" = Prionocheilus foveolatum, Prionocheilus obtusus, Prionocheilus aff. obtusus "Flexicalymene jemtlandica" = Flexicalymene (Onnicalymene) jemtlandica Thorslund 1940 trilobite "Prionocheilus narinosus" = Prionocheilus foveolatum Törnquist 1884 trilobite Prionocheilus obtusus McCoy 1846 trilobite Prionocheilus aff. obtusus McCoy 1846 trilobite
Lichida - Lichidae	Platylichas laxatus Platylichas laxatus McCoy 1846 trilobite
Odontopleurida - Odontopleuridae	Apianurus thorslundi Apianurus thorslundi Bruton 1965 trilobite
Trinucleida - Raphiophoridae	Raymondella sp., Ampyxella aculeata, Ampyxina sp., Lonchodomas pennatus, Lonchodomas aff. pennatus Raymondella sp. Reed 1935 trilobite Ampyxella aculeata Angelin 1854 trilobite Ampyxina sp. Ullrich 1922 trilobite Lonchodomas pennatus Latouche 1884 trilobite Lonchodomas aff. pennatus Latouche 1884 trilobite
Trinucleida - Trinucleidae	Tretaspis ceriodes Tretaspis ceriodes Angelin 1854 trilobite
Trinucleida - Dionididae	Dionide sp., Dionide magnifica Dionide sp. Barrande 1847 trilobite Dionide magnifica Owen and Bruton 1980 trilobite
Asaphida - Remopleurididae	Remopleurides sp., Remopleurella sp. Remopleurides sp. Portlock 1843 trilobite Remopleurella sp. Dean 1963 trilobite
Proetida - Tropidocoryphidae	Decoroproetus sp., Decoroproetus solenotus Decoroproetus sp. Pribyl 1946 trilobite Decoroproetus solenotus Owens 1970 trilobite
Proetida - Dimeropygidae	Mesotaphraspis sp., Mesotaphraspis bockeliei Mesotaphraspis sp. Whittington and Evitt 1953 trilobite Mesotaphraspis bockeliei Bruton and Owen 1979 trilobite
Proetida - Otarionidae	Harpidella sp. Harpidella sp. M'Coy 1849 trilobite
Corynexochida - Illaenidae	Stenopareia glaber, Illaenus (Parillaenus) fallax Stenopareia glaber Kjerulf 1865 trilobite Illaenus (Parillaenus) fallax Holm 1882 trilobite
Corynexochida - Styginidae	Phillipsinella preclara, Stygina minor Phillipsinella preclara Bruton 1976 trilobite Stygina minor Skjeseth 1955 trilobite