Species: ampla (BYRANT, 1933)
Etymology:

Locality:

Horizon:

Biostratigraphy:

Age

Material:

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Species:? tenuistriata (DENISON, 1953)
Etymology:

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age

Material:

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Species: dunklei DENISON, 1970
Etymology:

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age

Material:

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Species: williamsi DENISON, 1970
Etymology: After Professor J. Stewart Williams of Utah State University, who has been
active in the study of the Devonian rocks of northern Utah.

Holotype: FMNH 868

Locality: Locality A, about 12 miles southeast of Logan, Blacksmith Fork, Cache County, Utah.

Horizon: Card Member, Water Canyon Formation.

Biostratigraphy:

Age Early Devonian.

Material: Flattened dorsal shield.

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