Vestre Svartøy, Lake Tyrifjorden (Ordovician of Norway)

Where: Ringerike, Norway (60.1° N, 10.2° E: paleocoordinates 29.2° S, 9.3° W)

• local area-level geographic resolution

When: Dicellograptus anceps graptolite zone, Meristella crassa Schichten Member (Bønsnes Formation), Pirgu (449.5 - 445.6 Ma)

• Updated from original source based on Ebbestad 1999.

• member-level stratigraphic resolution

Environment/lithology: limestone and calcareous shale

• Rubbly limestones with interbedded calcareous shales which have yielded the very diverse shelly faunas listed by Kiær (1897). The highest part of the formation comprises calcareous (>45cm thick) shales with scattered limestone nodules.

Size classes: macrofossils, mesofossils

Preservation: replaced with calcite

Primary reference: E. Koken and J. Perner. 1925. Die Gastropoden des baltischen Untersilurs 1-324 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 154605: authorized by Pete Wagner, entered by Pete Wagner on 24.02.2014, edited by Björn Kröger

Creative Commons license: CC BY (attribution)

Taxonomic list

Paragastropoda
 Mimospirida - Clisospiridae
Clisospira christianieae n. sp. Koken and Perner 1925
Gastropoda
 Trochonematoidea - Lophospiridae
"Worthenia aista" = Ruedemannia lirata, "Worthenia vermetus" = Loxoplocus vermetus
"Worthenia aista" = Ruedemannia lirata Ulrich and Scofield 1897 snail
"Worthenia vermetus" = Loxoplocus vermetus Koken 1897 snail
 Euomphalina - Holopeidae
"Euomphalus dissoluta n. sp." = Pachystrophia devexa, Holopea ampullacea
"Euomphalus dissoluta n. sp." = Pachystrophia devexa d'Eichwald 1859 snail
Holopea ampullacea d'Eichwald 1860 snail
 Euomphalina - Helicotomidae
"Euomphalopterus carinifer" = Boucotspira carinifer
"Euomphalopterus carinifer" = Boucotspira carinifer Koken 1896 snail
 Euomphalina - Macluritidae
"Maclurites serpentrionalis" = Maclurina serpentrionalis, "Lesueurilla expansa n. sp." = Maclurites expansa
"Maclurites serpentrionalis" = Maclurina serpentrionalis Koken and Perner 1925 snail
"Lesueurilla expansa n. sp." = Maclurites expansa Koken and Perner 1925 snail
 Euomphalina - Platyceratidae
"Eunema rupestre" = Cyclonema rupestre
"Eunema rupestre" = Cyclonema rupestre d'Eichwald 1856 snail
 Bellerophontida - Bucaniidae
"Euomphalopterus excavatus" = Phragmolites excavatus, "Temnodiscus lindstroemi" = Phragmolites lindstroemi, "Conradella pinguis n. sp." = Megalomphala pinguis, Megalomphala carinata1
"Euomphalopterus excavatus" = Phragmolites excavatus Koken and Perner 1925 snail
"Temnodiscus lindstroemi" = Phragmolites lindstroemi Koken and Perner 1925 snail
"Conradella pinguis n. sp." = Megalomphala pinguis Koken and Perner 1925 snail
Megalomphala carinata1 Ebbestad 1999 snail
Based on some of the specimens id'ed as T. lindstrøemi
 Murchisoniina - Eotomariidae
"Eotomaria rupestris n. sp." = Paraliospira rupestris
"Eotomaria rupestris n. sp." = Paraliospira rupestris Koken and Perner 1925 snail
 Murchisoniina - Gosseletinidae
"Globispira pillula n. sp." = Cataschisma pillula
"Globispira pillula n. sp." = Cataschisma pillula Koken and Perner 1925 snail
 Murchisoniina - Hormotomidae
"Murchisonia meyendorfi" = Hormotoma meyendorfi, "Murchisonia insignis" = Hormotoma insignis
"Murchisonia meyendorfi" = Hormotoma meyendorfi Koken 1897 snail
"Murchisonia insignis" = Hormotoma insignis d'Eichwald 1860 snail
 Murchisoniina - Loxonematidae
Loxonema infrasilurica n. sp. Koken and Perner 1925 snail
Loxonema broeggeri n. sp. Koken and Perner 1925 snail
 Murchisoniina - Subulitidae
"Subulites (Cyrtospira) ornatus n. sp." = Cyrtospira ornatus, Subulites subula
"Subulites (Cyrtospira) ornatus n. sp." = Cyrtospira ornatus Koken and Perner 1925 snail
Subulites subula Koken 1896 snail
Tergomya
 Kiringellida - Hypseloconidae
"Palaeacmaea compressus" = Pygmaeoconus compressus
"Palaeacmaea compressus" = Pygmaeoconus compressus Koken and Perner 1925
Anthozoa
 Stauriida - Streptelasmatidae
Bodophyllum euthum2 Neuman 1969 horn coral
Streptelasma primum2 Wedekind 1927 horn coral
Densigrewingkia pyrgoidea2 Neuman 1969 horn coral