Hälludden section trilobites (Ordovician of Sweden)

Where: Sweden (57.4° N, 17.0° E: paleocoordinates 38.2° S, 8.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Holen limestone Formation, Kunda (468.1 - 463.5 Ma)

• Specimens sampled from "f" bed of Bohlin 1949. Age and stratigraphy based on Nordlund 1989 (GFF 111:64-94) and Struresson 1986 (GFF 108:331-348).

Environment/lithology: marine; lithified limestone

• fairly loosely-joined small lenses of limestone, at certain levels interrupted by more distinct bedded planes marked by a film of limonite

Size class: macrofossils

Collected in 1939, 1941

Primary reference: B. Bohlin. 1949. The Asaphus Limestone in northernmost Öland. Bulletin of the Geological Institution of the University of Uppsala 33:529-570 [M. Hopkins/M. Hopkins]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 188210: authorized by Melanie Hopkins, entered by Melanie Hopkins on 25.08.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Corynexochida - Illaenidae
 Odontopleurida - Odontopleuridae
 Agnostida - Metagnostidae
 Phacopida - Pterygometopidae
Pterygometopus sclerops Dalman 1827 trilobite
 Phacopida - Encrinuridae
 Phacopida - Cheiruridae
? Cyrtometopus sp. Angelin 1854 trilobite
Cyrtometopus clavifrons Dalman 1827 trilobite
 Phacopida - Pliomeridae
 Asaphida - Asaphidae
"Megalaspis extenuata" = Megistaspis, "Megalaspis heros" = Megistaspis, "Megalaspis rudis" = Megistaspis, Ptychopyge sp., Asaphus raniceps
"Megalaspis extenuata" = Megistaspis trilobite
"Megalaspis heros" = Megistaspis trilobite
"Megalaspis rudis" = Megistaspis trilobite
Ptychopyge sp. Angelin 1854 trilobite
Asaphus raniceps Dalman 1827 trilobite
 Asaphida - Remopleurididae
Remopleurides sp. Portlock 1843 trilobite
 Asaphida - Raphiophoridae
Ampyx nasutus trilobite
 Lichida - Lichidae
"Lichas verrucosus" = Metopolichas verrucosus, "Lichas celorrhin" = Metopolichas celorrhin
"Lichas verrucosus" = Metopolichas verrucosus Eichwald 1842 trilobite
"Lichas celorrhin" = Metopolichas celorrhin Angelin 1854 trilobite