Species: banksii (HUXLEY & SALTER, 1856) LANKESTER, 1865
Etymology:

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age:

Material:
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Species: arcadia (MATTHEW, 1888)
Etymology:
= Diplaspis arcadica MATTHEW, 1888

Holotype: ROM 11117

Locality: Nerepis River, Kings County, New Brunswick, British Columbia Province, Canada.

Horizon:

Biostratigraphy:

Age: Silurian.

Material: Plates.
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Species: wardelli (RUEDEMANN, 1916)
Etymology:
= Anatifopsis wardelli RUEDEMANN, 1916
= Eoarchegonaspis wardelli (RUEDEMANN, 1916) KIAER, 1932 (nomen nudum)

Holotype: NYSM 9612

Locality: Guymard Quartzied not far below the Longwood Shales, Orange County, New York.

Horizon: Vernon Shale, Red Beds, Yerguard Quarzit, Medina Formation?

Biostratigraphy:

Age: Early Silurian.

Material: Fragment dorsal shield.

Lectoholotype: NYSM 9613: Probably a brancial plate.

Referred material:

BRYANT, 1926

Locality: Near Otisville, Orange County, New York.

Horizon: Guymard Quartzite beds.

Biostratigraphy:

Age; Early Silurian.

Material: Severial fragmentary specimens.

FLOWER & WAYLAND-SMITH, 1952

NYSM 9613: A small elongate plate, slightly curved and longitudinally striated.

NYSM 9614: An incomplete plate, rounded at the complete end, and asymmetrical.

NYSM 9615: Anterior end of a plate.

NYSM 9616: An impression of the interior of a ventral plate.

NYSM 9617: A crushed dorsal plate.

NYSM 9618: A slender curved plate.

NYSM 9619: A broader triangular plate.

NYSM 9620: A plate, strongly curved from one side to the other.

NYCM 9621: A strongly conves plate.

NYSM 9622: A small piece of a ventral or dorsal plate.

NYSM 9623: A fragmentary impression of the outer surface of a ventral plate.

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Species: van ingeni BRYANT, 1926
Etymology: In honor of Professor Gilbert van Ingen of Princton University who contirbuted much to our knowledt of the Palaeozoic formations in Pennsylvania.

Holotype:

Locality: Guymard Quartzite near Otisville, Orange County, New York.

Horizon:

Biostratigraphy:

Age:

Material: Fragmentary specimen.

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Species: alexandari MARSS, 2019
Etymology: In honor of Dr Alexander Zhivkovich, a friend and one of the leaders of several expeditions to the Central Urals.

Holotype: BIT 408-14

Locality: Locality 85-042, Tabuska (Vishnevaya Gora), right bank of the Ufa River, downstream from the mouth of the Tabusk River, Ufa, Amphitheatre, the Central Urals, European Russia.

Horizon: Serga Subzone, Tabusak Beds.

Biostratigraphy:

Age: Late Ludlow Epoch or early Pridoli Epoch, Late Silurian.

Material: A large fragment of the right side of the ventral shield.

Paratypes:

GIT 408-16, 17, 18, 19:

Locality: Locality 85-042D, Tabuska (Vishnevaya Gora), right bank of the Ufa River, downstream from the mouth of the Tabusk River, Ufa, Amphitheatre, the Central Urals, European Russia.

Horizon: Serga Subzone, Tabusak Beds.

Biostratigraphy:

Age: Late Ludlow Epoch or early Pridoli Epoch, Late Silurian.

Material:

GIT 408-15:

Referred material:

GIT 408043,45, 46: Fragmentary remains.