Species: allenae FLOWER & WAYLAND-SMITH, 1952
Etymology:

Holotype: Museum of Comparative Zoology

Locality: About 2 miles southeast of Kenwood, Oneida County, New York.

Horizon: Vernon Shale, Salina Group.

Biostratigraphy:

Age: Late Silurian.

Material: Dorsal shield in part and counterpart.

Referred material:

FMNH PF 3262: Cast of type.

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Species: leonardi FLOWER & WAYLAND-SMITH, 1952
Etymology:

Holotype: Museum of Comparative Zoology

Locality: About 2 miles southeast of Kenwood, Oneida County, New York.

Horizon: Vernon Shale, Salina Group.

Biostratigraphy:

Age: Late Silurian.

Material: Dorsal shield.

Referred material:

Cf. Vernonaspis leonardi FLOWER & WAYLAND-SMITH, 1952: Impression of the interior and the plate itself.

FMNH PF 3262: Cast of type.

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Species: bamberi DENISON, 1963
Etymology:

Holotype: Princeton University, PU 17081

Locality: Beaver River, 60?27’N lat., 125?46’W long, Southeastern Yukon Province, Canada.

Horizon: Downtonian (?).

Biostratigraphy:

Age: Late Silurian.

Material: Dorsal sheild, nearly complete.

Referred material:

FMNH PF 3287: Cast of type.

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Species: major DENISON, 1963
Etymology:

Holotype: Princeton Univeristy, PU 3708

Locality: Beaver River, Southeastern Yukon Province, Canada.

Horizon:

Biostratigraphy:

Age: Late Silurian.

Material: Dorsal shield.

Referred material:

FMNH PF 3708: Cast of type.

= Vernonaspis cf. V. major DINELEY & LOEFLIER, 1976

Locality: GSC 81050, exact co-ordinates uncertain, on a ridge on the south side of June Lake, Northwest Territories Province, Canada.

Horizon: With the Delorme Formation.

Biostratigraphy:

Age: Late Silurian.

Material:

NMC 21434: Anterior-latral fragment of dorsal shield.

Note: High-energy, shallow-water, marine.

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Species: bryanti DENISON, 1964
Etymology:

Holotype: FMNH PF 838

Locality: Locality 1, east side of New Jersey Highway 23, 0.9 miles (1.4 mile by road) southsouthest of Duttonville, grove along New Jersey Highway 23, near Mill Brook, road cut opposite Vies Lunch Stand,
Montague Township, Sussex County, New Jersey.

Horizon: High Falls Formation.

Biostratigraphy:

Age: Late Silurian.

Material: Dorsal shield.

Paratypes:

FMNH PF 838: Dorsal shield.

FMNH PF 841: Dorsal shields.

FMNH PF 842: Ventral shield.

FMNH PF 845: Dorsal shield fragment.

FMNH PF 855: Ventral shield.

FMNH PF 3646: Incomplete dorsal and ventral shield.

FMNH PF 3711: Cast of PU 12922: Cast of dorsal shield.
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Species: sekwiae DENISON, 1964
Etymology:

Holotype: NMC 10036

Locality: Top of Mount Sekwi, beside Keele River, top of Mt. Sekwi, 63?28’N lat., 128?40’W, Northwest Territories Province, Canada.

Horizon:

Biostratigraphy:

Age: Late Silurian.

Material: Dorsal shield.

Paratypes:

FMNH PF 3673: Crushed dorsal shield.

FMNH PF 3674: Incomplete dorsal shield.

FMNH PF 3675: Incomplete ventral shield.

FMNH PF 3676: Incomplete ventral shield.

FMNH PF 3677: Shield fragment.

FMNH PF 3678: Shield fragment.

Referred material:

FMNH PF 3679: Cast of type.

DINELEY & LOEFLER, 1976

Locality: CS (Chevron Standard Localities) Yex37b, 62?35’N, 127?45’W, 16 km south of Grizzly Bear Lake, spot locality, Northwest Territories Province, Canada.

Horizon: Formation unknown.

Biostratigraphy:

Age: Late Silurian or Early Devonian.

Material:

NMC 13892: Incomplete dorsal shield.

Note: Perhaps a rather anaerobic area of still water with rare influxes of silt and organic debris.

Locality: GSC 81050, exact co-ordinates uncertain, on a ridge on the south side of June Lake, Northwest Territories, Canada.

Horizon: With the Delorme Formation.

Biostratigraphy:

Age: Late Silurian.

Material:

NMC 19700-19712, 19714-19718: 18 incomplete dorsal shields.

NMC 19719-19731, 19732a, b, 19733-19736, 19737a-c, 19738-19739: 24 incomplete ventral shields.

Note: High-energy, shallow-water, marine.

= Vernonaspis cf. V. sekwiae

Locality: CS (Chevron Standard Localities) YB1, 62?24’N, 127?18’W, 4 km west-south-west of Jade Lake, Northwest Territories, Canada.

Horizon: 4f is at 625 m in section, Formation unknown

Biostratigraphy:

Age: Probably Late Silurian.

Material:

NMC 13769-13801: In 32 blocks, each containing at least 1 shield fragment and many containing large numbers fo entiere but distorted shields.

Note: Shallow water, marine.

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Species: tortucosta DINELEY & LOEFLER, 1976
Etymology:

Holotype: NMC 19713

Locality: GSC 81050, exact co-ordinates uncertain, on a ridge on the south side of June Lake, Northwest Territories Province, Canada.

Horizon: With the Delorme Formation.

Biostratigraphy:

Age: Late Silurian.

Material: A complete but crushed dorsal shield.

Note: High-energy, shallow-water, marine.