0.5 mi W of Chepstow (Devonian of Canada)

Also known as Fagerstrom #41

Where: Ontario, Canada (44.0° N, 81.3° W: paleocoordinates 37.0° S, 27.7° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Formosa Reef Limestone Member (Amherstburg Formation), Eifelian (393.3 - 387.7 Ma)

• Not explicitly stated as Emsian in this ref; however, it is in Ludvigsen (1986). [JA: the Formosa Reef Limestone is actually Eifelian, see Edinger et al. 2002]

• member-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified, gray reef rocks and lime mudstone

• "The bulk of the reef comprises poorly bedded stromatoporoidal boundstone and minor coralline boundstone in a matrix of lime mudstone and wackestone. [Ludvigsen, 1986]."

Primary reference: J. A. Fagerstrom. 1961. The fauna of the Middle Devonian Formosa Reef Limestone of southwestern Ontario. Journal of Paleontology 35(1):1-48 [J. Alroy/M. Sommers/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 3849: authorized by John Alroy, entered by Mike Sommers on 10.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhynchonellata
 Rhynchonellida - Camarotoechiidae
Camarotoechia tethys
Camarotoechia tethys Billings 1860
 Spiriferida - Elythidae
Elytha formosensis
 Spiriferida - Hysterolitidae
Fimbrispirifer divaricatus
Cephalopoda
 Oncocerida - Brevicoceratidae
Brevicoceras cf. conicum
Brevicoceras cf. conicum
originally entered as "Brevicoceras cf. conicum"