Elnes Fm., Helskjer Mbr., Oslo region, Norway (Ordovician of Norway)

Where: Norway (60.0° N, 11.0° E: paleocoordinates 34.6° S, 11.0° W)

• local area-level geographic resolution

When: Helskjer Member (Elnes Formation), Early/Lower Llanvirn (468.0 - 461.1 Ma)

• member-level stratigraphic resolution

Environment/lithology: offshore shelf; lithified limestone and shale

• Pale-weathering, thin-bedded limestone, nodular limestone, and dark shale

Primary reference: B. T. G. Wandas. 1983. The Middle Ordovician of the Oslo region, Norway, 33. Trilobites from the lowermost part of the Ogygiocaris Series. Norsk Geologiske Tidsskrift 63:211-267 [A. Miller/P. Novack-Gottshall/A. Clement]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 3180: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 27.07.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• Trilobite biostratigraphy
Trilobita
 Corynexochida - Styginidae
"Turgicephalus sp." = Raymondaspis (Turgicephalus) Fortey 1980 trilobite
Bronteopsis sp. Nicholson and Etheridge 1879 trilobite
 Corynexochida - Illaenidae
Illaenus sp. Dalman 1827 trilobite
 Lichida - Lichidae
Metopolichas sp. G├╝rich 1901 trilobite
 Trinucleida - Trinucleidae
? Botrioides sp. Stetson 1927 trilobite
originally entered as "Botrioides? sp."
 Trinucleida - Raphiophoridae
Ampyx sp. Dalman 1827 trilobite
 Asaphida - Nileidae
? Nileus sp. Dalman 1827 trilobite
originally entered as "Nileus? sp."
 Asaphida - Asaphidae
Ogygiocaris sp. Angelin 1854 trilobite
Niobe sp. Angelin 1851 trilobite
Asaphus sp. Brongniart 1822 trilobite
Pseudobasilicus sp. Reed 1930 trilobite
Ogmasaphus sp. Jaanusson 1953 trilobite
Megistaspis sp. Jaanusson 1956 trilobite
 Phacopida - Encrinuridae
Cybelurus sp. Levitsky 1962 trilobite
 Phacopida - Pliomeridae
Pliomera sp. Angelin 1845 trilobite
 Phacopida - Cheiruridae
Cyrtometopus sp. Angelin 1854 trilobite
 Phacopida - Pterygometopidae
Pterygometopus sp. Schmidt 1881 trilobite
 Harpetida - Harpetidae
Scotoharpes sp. Lamont 1948 trilobite
 Proetida - Telephinidae
Telephina sp. Marek 1952 trilobite
Carolinites sp. Kobayashi 1940 trilobite
Artiopoda
 Agnostida - Metagnostidae
Geragnostus sp. Howell 1935