PBDB Collection

Lots 6 and 7, con. VI, 3 miles north of Earlton post office, Armstrong township (Silurian of Canada)

Where: Ontario, Canada (47.8° N, 79.8° W: paleocoordinates 20.5° S, 45.4° W)

When: Thornloe Formation, Telychian (438.5 - 433.4 Ma)

• This should be in the lower part of the formation, which is Telychian.

• formation-level stratigraphic resolution

Environment/lithology: limestone

• thin- to thick-bedded, granular limestone, shaly partings, chert nodules, fossiliferous. (From Bolton & Copeland 1972

Size class: macrofossils

Preservation: mold/impression

Primary reference: A. F. Foerste. 1925. Cephalopoda of Lake Timiskaming area and certain related species. Canada Department of Mines 145:64-93 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 233158: authorized by Pete Wagner, entered by Pete Wagner on 16.01.2024

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

unclassified
-	Sacloceras scrutatum n. sp. Sacloceras scrutatum n. sp.
Cephalopoda
Bisonocerida - Humeoceratidae	Humeoceras unguloideum n. sp. Humeoceras unguloideum n. sp.
Endocerida - Narthecoceratidae	Donacoceras timiskamingense n. sp., Donacoceras arundineum n. sp. Donacoceras timiskamingense n. sp. Foerste 1925 Donacoceras arundineum n. sp. Foerste 1925
Discosorida - Discosoridae	? Discosorus vetustus n. sp., ? Discosorus geronticus n. sp., ? Discosorus earltonensis n. sp. ? Discosorus vetustus n. sp. ? Discosorus geronticus n. sp. ? Discosorus earltonensis n. sp.
Discosorida - Lowoceratidae	Stokesoceras cf. romingeri Stokesoceras cf. romingeri
Orthocerida - Orthoceratidae	Orthoceras cf. alienum Orthoceras cf. alienum
Orthocerida - Sactoceratidae	Sactoceras vadocameratum n. sp. Sactoceras vadocameratum n. sp.
Actinocerida - Armenoceratidae	Megadiscosorus inopinatus n. sp., Megadiscosorus crassisegmentatus n. gen. n. sp., "Megadiscosorus brevior n. sp." = Megadiscosorus crassisegmentatus brevior, Armenoceras pauloinclinatum n. sp. Megadiscosorus inopinatus n. sp. Foerste 1925 Megadiscosorus crassisegmentatus n. gen. n. sp. Foerste 1925 "Megadiscosorus brevior n. sp." = Megadiscosorus crassisegmentatus brevior Foerste 1925 Megadiscosorus crassisegmentatus brevior Armenoceras pauloinclinatum n. sp.