Sample unit XI (section 6) (Ordovician of Canada)

Where: Ontario, Canada (44.6° N, 75.7° W: paleocoordinates 29.0° S, 61.9° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Oxford Formation (Beekmantown Group), Arenig (478.6 - 466.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: peritidal; lithified, massive, coarse-grained, gray, sandy dolomite

• Dolostone (Greggs and Bond 1971). More extensively described in Bond and Greggs (1973, CJES 10:1140-1155): "Dolomite-sandy; gray-brown, massive, thick bedded, resistant; sand grains coarse to very coarse, extremely well rounded, moderately well sorted, occur as 'floating' grains in dolomite matrix; pink calcite-filled cavities 1-2 in. (2.5-5.0 cm) diameter common; distinctive red-brown weathering, lower contact very sharp, probably erosional.

Size class: mesofossils

Reposited in the GSC

Collection methods: bulk, chemical,

Primary reference: R. G. Greggs and I. J. Bond. 1971. Conodonts from the March and Oxford Formations in the Brockville Area, Ontario. Canadian Journal of Earth Sciences 8:1455-1471 [M. Hopkins/M. Hopkins]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 173871: authorized by Melanie Hopkins, entered by Melanie Hopkins on 20.10.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Conodonta
 Prioniodontida - Strachanognathidae
Strachanognathus parva
 Protopanderodontida - Acanthodontidae
Ulrichodina prima
 Protopanderodontida - Protopanderodontidae
"Oneotodus variabilis" = Variabiliconus variabilis, Drepanodus homocurvatus, Drepanodus simplex, Scolopodus quadriplicatus, "Acontiodus staufferi" = Scolopodus staufferi
"Oneotodus variabilis" = Variabiliconus variabilis Lindström 1955 conodont
Drepanodus simplex Branson and Mehl 1943 conodont
"Acontiodus staufferi" = Scolopodus staufferi Furnish 1938 conodont