Bed F. Hjorthamn limestone (Ordovician of Sweden)

Where: Sweden (57.1° N, 16.9° E: paleocoordinates 38.5° S, 8.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Asaphus raniceps trilobite zone, Holen Formation, Kunda (468.1 - 463.5 Ma)

• Equivalent to "f" bed of Bohlin 1949. Age and stratigraphy based on Nordlund 1989 (GFF 111:64-94) and Struresson 1986 (GFF 108:331-348). Equivalient to "f" bed at Haget of Bohlin 1949.

Environment/lithology: marine; lithified, glauconitic limestone

• "Hjorthamn limestone" = variegated (partly gray with slightly reddish tint, partly brownish-black) limestone with large glauconitic grains

Size class: macrofossils

Collection methods: surface (in situ),

Primary reference: B. Bohlin. 1949. The Asaphus Limestone in northernmost Ă–land. 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 188219: authorized by Melanie Hopkins, entered by Melanie Hopkins on 25.08.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

• brachiopod rich
Trilobita
 Corynexochida - Illaenidae
 Agnostida - Metagnostidae
 Phacopida - Pterygometopidae
Pterygometopus sclerops Dalman 1827 trilobite
 Phacopida - Cheiruridae
Ceraurus ornatus trilobite
? Cyrtometopus sp. Angelin 1854 trilobite
Cyrtometopus clavifrons Dalman 1827 trilobite
Sphaerocoryphe sp. Angelin 1854 trilobite
 Phacopida - Pliomeridae
 Asaphida - Asaphidae
"Megalaspis extenuata" = Megistaspis, "Megalaspis heros" = Megistaspis, "Megalaspis rudis" = Megistaspis, Niobe frontalis, Ptychopyge sp., Asaphus raniceps, Pseudoasaphus sp.
"Megalaspis extenuata" = Megistaspis trilobite
"Megalaspis heros" = Megistaspis trilobite
"Megalaspis rudis" = Megistaspis trilobite
Niobe frontalis Dalman 1827 trilobite
Ptychopyge sp. Angelin 1854 trilobite
Asaphus raniceps Dalman 1827 trilobite
Pseudoasaphus sp. Schmidt 1901 trilobite
 Asaphida - Remopleurididae
Remopleurides sp. Portlock 1843 trilobite
 Asaphida - Nileidae
 Asaphida - Raphiophoridae
Ampyx nasutus trilobite
 Lichida - Lichidae
"Lichas celorrhin" = Metopolichas celorrhin
"Lichas celorrhin" = Metopolichas celorrhin Angelin 1854 trilobite