Species: elliptica (BYRANT, 1934) WHITELY, 1940
Etymology:

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

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Species: utahensis DENISON, 1953
Etymology:

Holotype: FMNH PF 737

Locality: Cottonwood Canyon, NW 1/4, Sec. 18, T13N, R3E, Site 6, Cache County, Utah.

Horizon: Water Canyon Formation.

Biostratigraphy:

Age: Early Devonian.

Material: Dorsal and ventral sheilds, associated body scales.

Paratypes:

FMNH PF 342: Partial vertebral shield.

FMNH PF 738: Nearly complete ventral shield.

FMNH PF 739: Incomplete dorsal shield.

FMNH PF 741: Partial ventral shield.

FMNH PF 743: Incomplete branchial plate.

FMNH PF 744: Incomplete branchial plate.

FMNH PF 849: Right dorsolateral scale.
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Species: laticostatus DENISON, 1960
Etymology:

Holotype: FMNH PF 1701

Locality: 2.25 miles southsouthwest of Holland, Monclova Township, S 1/2, Sec. 29, Holland Quarry, Lucas County, Ohio.

Horizon: Holland Quarry Shale.

Biostratigraphy:

Age: Lower Siegenian Stage, Early Devonian Epoch, Early Devonian.

Material: Dorsal sheild in counterpart.

Paratypes:

FMNH PF 1702-PF 1736: Dorsal shields,mostly complete.

FMNH PF 1737-1762: Ventral shiels, incomplete.

FMNH PF 1863-1770: Postoral plate.

FMNH PF 1771-1174: Scales.

FMNH PF 1775-1776: Possible oral plate.

FMNH PF 1777-1778: Suborbital plates.

FMNH PF 1779-1780: Oral-lateral plates.

FMNH PF 1781-1783: Posterolateral plates.

FMNH PF 1811: Dorsal shield.

FMNH PF 1813-1822: Scales.

FMNH PF 1826-1827: Suborbital plates.

FMNN PF 1828: Posterolatral plate.

FMNH PF 1829: Anterolateral plates.

FMNH PF 1830: Possible oral plate.

FMNH PF 1831-1833: Suborbital plates.

FMNH PF 1834-1835: Undetermined plates.

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Species: sandbergi ELLIOT, REED & LOEFFLER, 2004
Etymology: In reference to Dr. Charles Sandberg of the USGS Denver, in honor of the major contributions that he has made to knowledge of the Devonia nof western United States.

Holotype: FMNH-PF 14438

Locality: Logan Canyon, near Logan, northern Utah.

Horizon: Base of the lower part of the Grassy Flat Member, Water Canyon Formation.

Biostratigraphy:

Age: Early Devonian.

Material: Dorsal shield.

Referred material:

FMNH -PF 14435-14437, 14439, 14440: Dorsal shields.

FMNH -PF 14441: Subrostral area.

FMNH -PF 14442-14450: Ventral shields.

FMNH -PF 14451-14457: Oral plates.

FMNH -PF 14458-14462: Scales.