Species: alata BROAD, 1973
Etymology: Latin, alatus, "winged," referring to the extreme developemnt of lateal wings.
Holotype: NMC 12770
Locality: Locality C-10550, Somerset Island, Northwest Territories Province, Canada.
Horizon: Lower part Peel Sound Formation.
Biostratigraphy:
Age: ?Late Silurian to Early Devonian.
Material: Dorsal shield.
Paratype:
NMC 12767
Locality: Lower locality C-10045, Prince of Wales Island, Northwest Territories Province, Canada.
Horizon: Lower part Peel Sound Formation.
Biostratigraphy:
Age: ?Late Silurian to Early Devonian.
Material: Dorsal shield.
NMC 12738
Locality: Locality C-6462, Ellesmere Island, Northwest Territories Province, Canada.
Horizon: Devon Island Formation.
Biostratigraphy:
Age: ?Late Silurian to Early Devonian.
Material: Dorsal shield.
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Species: angusta BROAD, 1973
Etymology: Latin, angustus, "narrow," referring to the slender proportions of the dorsal shield.
Holotype: NMC 12760
Locality: Locality C-10045, Prince of Wales Island, Northwest Territories Province, Canada.
Horizon: Lower part Peel Sound Formation.
Biostratigraphy:
Age: ?Late Silurian to Early Devonian.
Material: Incomplete shield.
Paratypes:
NMC 12777, 12782, 12783: Incomplete dorsal shield.
NMC 12788: Entire ventral shield.
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Species: ovata BROAD, 1973
Etymology: Latin, ovatus, "oval," referring to the outline of the dorsal shield.
Holotype: NMC 12778
Locality: Locality C-10045, Prince of Wales Island, Northwest Territories Province, Canada.
Horizon: Lower part Peel Sound Formation.
Biostratigraphy:
Age: ?Late Silurian to Early Devonian.
Material: Entire dorsal shield.
Paratype:
NMC 12766, 12775, 12779-12780, 12785, 12789, 12790, 12913: Fragmentary dorsal shields.
NMC 12773
Locality: Near locality C-10049, Somerset Island, Northwest Territories Province, Canada.
Horizon: Read Bay Formation.
Biostratigraphy:
Age: ?Late Silurian to Early Devonian.
Material: Entire dorsal shield.
NMC 12790
Locality: Near locality C-10552, Somerset Island, Northwest Territories Province, Canada.
Horizon: Read Bay Formation.
Biostratigraphy:
Age: ?Late Silurian to Early Devonian.
Material: Fragmentary dorsal shield.