Bygdøy, Nakkholmen Fm (Ordovician of Norway)

Also known as Bygdö (=Bygdøy, Bygdin)

Where: Oslo-Asker, Norway (61.3° N, 8.8° E: paleocoordinates 30.2° S, 10.6° W)

• coordinate estimated from map

• local area-level geographic resolution

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

• group of beds-level stratigraphic resolution

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 162529: authorized by Björn Kröger, entered by Björn Kröger on 29.09.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Asaphida - Remopleurididae
Remopleurides sp. Portlock 1843 trilobite
 Trinucleida - Raphiophoridae
Ampyxella aculeata Angelin 1854 trilobite
Ampyxina sp. Ullrich 1922 trilobite
Lonchodomas pennatus Latouche 1884 trilobite
 Proetida - Dimeropygidae
Mesotaphraspis sp. Whittington and Evitt 1953 trilobite
 Proetida - Aulacopleuridae
Harpidella sp. M'Coy 1849 trilobite
 Corynexochida - Illaenidae
Stenopareia glaber Kjerulf 1865 trilobite
 Lichida - Lichidae
Platylichas laxatus McCoy 1846 trilobite
 Phacopida - Calymenidae
Flexicalymene scabustula Siveter 1977 trilobite
 Phacopida - Pterygometopidae
Chasmops extensa Boeck 1838 trilobite