Species: planicosta DINELEY & FOEFFLER, 1976
Etymology:

Holotype: NMC 19819

Locality: GSC 69017, 63°25’N, 128°00’W, west of Natla River, Northwest Territories Province, Canada.

Horizon: 38m above the base of the Delorme Formation.

Biostratigraphy:

Age: Late Silurian or Early Devonian.

Material: Incomplete dorsal shield.

Paratype:

NMC 19818, 19820: Incomplete dorsal shields.

NMC 19829: Dorsal shield fragment with branchial opening.

NMC 19850: Incomplete venteral shield.

Referred material:

NMC 19821-19828, 19830-19843, 19848: 21 dorsal shield fragments.

NMC 19843, 19847, 19851-19859, 21380-21384: 16 ventral shield fragments.

Note: Brackish water lagoon.

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Species: adunata DINELEY & LOEFFLER, 1976
Etymology:

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age:

Material: