Trilobites of the Tegert Formation


Tegert Formation, Lower Silurian, southern Rocky Mountains, southeastern British Columbia




Paracybantyx tegartensis Norford, 1994

Songkania sp. Norford, 1994

Scotoharpes sp. Norford, 1994

Radiurus avalanchensis Chatterton and Perry, 1984

Youngia sp. 1 Norford, 1994

Youngia sp. 2 Norford, 1994

Wallacia hendersoni Norford, 1994

Podowrinella rossi Norford, 1994 (also in the Beaverfoot Fm.)

indet. lichid Norford, 1994

?Kettneraspis sp. Norford, 1994

Eophacops aff. E. marklandensis = Podowrinella rossi

Encrinurus sp. (of Norford, 1962) = Wallacia hendersoni

Cheirurus cf. C. niagarensis (of Norford, 1962) = Radiurus avalanchensis



The Tegert Formation outcrops in the western Ranges of the Rocky Mountains near Radium, British Columbia. Almost all known outcrops are in Canada's Rocky Mountain Parks, so collecting is forbidden. The Tegert Formation consists mainly of argillaceous limestone and shale and occurs locally beneath the sub-Devonian unconformity. Fossils include: graptolites, conodonts, and benthic macrofossils (trilobites, brachiopods, echinoderm fragments, also rare corals, gastropods, cephalopods, and conularids). The age is Late Telychian (Late Llandovery). The trilobite fauna is named after the two most prominent genera - the Podowrinella-Radiurus Fauna. Ten species of trilobites have been recorded (Norford, 1994).


Norford, B. S. (1994)  Biostratigraphy and trilobite fauna of the Lower Silurian Tegart Formation, southeastern British Columbia. In Contributions to Canadian Paleontology, Geological Survey of Canada, Bulletin 479, p. 13-47.

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