Genus: Archegonaspis JAEKEL, 1927
Etymology:

Species: integra (KUNTH, 1872) DENISON, 1964
Etymology:
= Cyathaspis (Pteraspis) integer KUNTH, 1872

Holotype: MB 1975

Locality:Beyrichienkalk, Schoneberg near Berlin, northern Germany.

Horizon:

Biostratigraphy:

Age: Early Ludlow Epoch, Late Silurian.

Material: Dorsal and ventral shields.

Refrred material:

MARSS, 2019

Locality: Depth 8.9 m, Reo-927 Core, Saaremaa.

Horizon: Tahula Beds.

Biostratigraphy:

Age: Kuressaare Stage, Late Silurian.

Material:

GIT 721-1: A big fragment of sheild.

 

Locality: Loc. 85.042, right bank of the Ufa River, downstream form teh mouth of the Tabuska River, Ufa AMphitheatre, teh Central Urals, European Russia.

Horizon: Serga Subzone, Tabuska Beds.

Biostratigraphy:

Age: Late Ludlow Epoch, or lower Pfridol, Late Silurian.

Material:

GIT 408-2: Anterior and mid-portions of the left side of the ventral shield.

GIT 408-3: A small fragmetn from teh right side of the dorsal shield wiht a pathc of the postrostral field wiht a part of teh supraorbital canal.

GIT 408-4: Fragments of unclear orgin on the body, possibly ventral shield.

GIT 408-7: A fragmetn from teh anterior right side of dorsla shield.

GIT 408-8: The position fthis fragment may be dorsal.

GIT 408-24, -38, -42: Scales.

 

Locality: Loc. 85.1146-5D, Latavia.

Horizon:

Biostratigraphy:

Age: Ludlow Epoch, Late Silurian.

Material:

GIT 408-5 with GIT 408-2: Fragments of unclear orgin on the body, possibly ventral shield.

 

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Species: schmidti (GEINITZ, 1884)
= Cyathaspis schmidti GEINITZ, 1884
= Archegonaspis integer var schmidti (GEINITZ, 1884) KIAER, 1932
= Aequiarchegonaspis schmidti (GEINITZ, 1884) STENSIO, 1958
Etymology:

Holotype: GG 489/1

Locality: Glacial erratics, near Rostock, North Germany.

Horizon: Graptolithengestein.

Biostratigraphy:

Age: Late Silurian.

Material:

Referred material:

= cf. A. schmidti, LOEFFLER & JONES, 1976

Locality: On the east side of the bay at Port Leopold, Somerset Island, North-west Territories Province, Canada.

Horizon: Approximately 220 m above the base of the Leopold Formation.

Biostratigraphy:

Age: Late Silurian to Early Devonian.

Material:

NMC 21574-21587, 21589, 21590, 21595: 16 dorsal sheilds.

NMC 21597-21599: 3 ventral sheilds.

 

MARSS, 2019

Locality: Edole-61 core, depth 597.3 m, Latavia.

Horizon:

Biostratigraphy:

Age: Late Silurian.

Material:

GIT 171-1 (= Pi 5027): Scales.

 

Locality: Core No. 1, depht 1535 m, Kaliningrad District, Vaigach Island, Russia.

Horizon:

Biostratigraphy:

Age: Upper Wenlock, Late Silurian.

Material:

LIG 25-022: Scales.

 

Locality: Girdziai-37 core, depth 1037.2-1037.4, Lithuania.

Horiozon: Pagegiai Formation.

Biostratigraphy:

Age: Upper Ludlow Epoch, Late Silurian.

Material:

GIT 721-2: Scale.

 


= Archegonaspis integer var schmidti (GEINITZ, 1884) KIAER, 1932
Etymology:
= Cyathaspis schmidti GEINITZ, 1884

Holotype:

Locality: Rostock, Bahnhof, Brandenburg State, Germany.

Horizon: Graptolithengestein.

Biostratigraphy:

Age: Late Silurian.

Material: Ventral shield.

Referred material:

FMNH PF 1128: Cast of type.


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Species: lindstromi KIAER, 1932
Etymology:
= Lauaspis lindstromi (KAIER, 1932) STENSIO, 1958

Holotype: C1564A, B

Locality: Lau canal, Lau Parish, Gotland Island, Sweden.

Horzon: Hemse Beds.

Biostratigraphy:

Age: Ludlow Epoch, Late Silurian.

Material: Dorsal shield (A) and ventral shield (B).

Referred material:

C1784: Broken branchial plate.

C1782, 1783: 2 scales.

 

FREDHOLM, 1988

Range.-Ludlovian: Leintwardinian?

Material: Ca 60 scale- and shield fragments.

Occurrence on Gotland. – Hemse marls: SE part, Polygnathoides siluricus conodont zone, Gannor 1 (Lindstrom 1985 and herein), Botvide 1, Fie 3, 4, Gannor 3, Glaves 1, Gogs 1, Hagvide1, Klasard 1; uppermost part, Bomunds I Burgen 1, Horte 1, Nar 2, Nyan 2; Hemse limestones, unit e. P. siluricus Zone, a few mostly badly preserved, cyathaspid framgntes have been found at Gannes 3, Millklint 3, Millklintdalen 2, Ostergarnsholm 2, 3, and Sysne 1.

Regioal occurrence. ?Latvia: Edole-61 boring, Ludlovian (MARS, 1977)


MARSS, 2019

Locality: Edole drillcore, depth 594.1 m, Latavia.

Horizon:

Biostratigraphy:

Age: Late Silurian.

Material:

GIT 171-2 (= Pi 5028): Partial rostral epitegum and posterostal field.

 

Locality: Loc. 85.042, Latavia.

Horizon:

Biostratigraphy:

Age: Ludlow Epoch, Late Silurian.

Material:

GIT 408-1; Right side of broken sield.

GIT 408-9: Anteiro part of a platelet?

GIT 408-10: Postero-medial part of a dorsal sidlt.

GIT 408-11: Lateral plate..

 

Locality: Loc. 85-146.5, Cenral Urals, Russia.

Horizon: Tabuska (Vishnevaya Gora) section.

Biostratigraphy:

Age: Lower Pridoli Epoch, Late Silurian.

Material:

GIT 408-12: Possibly the anterior part of a branchial plate.

GIT 408-13: Possibly the posterior part of a branchial pale.

 

Locality: Loc. 85-042, Cenral Urals, Russia.

Horizon: Tabuska (Vishnevaya Gora) section.

Biostratigraphy:

Age: Lower Pridoli Epoch, Late Silurian.

Material:

GIT 408-21-408-23, 408-25 to 408-37: Scales.

 

Locality: Locality 2055v, Pioneer Island, Severnaya Zemyla Archipelago.

Horizon:

Biostratigraphy:

Age: Wenlock Epoch, Middle Silurian.

Material:

GIT 721-6:Broken right branchial plate.

 

= Cyathaspis? Schmidtii LINDSTROM, 1895

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age:

Material:


= Archegonaspis sp. MARSS, 1977

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age:

Material:


= Onchus windti WEIGELT, 1930

Holotype:

Locality:

Biostratigraphy:

Age:

Material:


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Species: drummondi FLOWER & WAYLANDSMITH, 1952
Etymology:

Holotype:

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

Horizon: Vernon Shale, Salina Group.

Biostratigraphy:

Age: Late Silurian.

Material: Inner surface of dorsal shield.

Referred material:

= Archegonaspis cf. drummondi FLOWER & WAYLANDSMITH, 1952: Vental plate.

FMNH PF 3266: Cast of type.


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Species: bimaris NOVITSKAYA, 1970
Etymology:

Holotype: PIN 3048/1

Locality: 1.2 km northwest of the “vaygach’ plar station and approximatley 3.5 km west of Cape Kostyanonye, shore of Karskiye Vorata Stratit, Vaygach Island, Arkhangelsky Oblast, European Russia.

Horizon:

Biostratigraphy:

Age: Middle? Ludlovian Epoch, Late Silurian.

Material: Dorsal sheild, destroyed in right posterolateral portion.

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Species: bashkirica MARSS, 2019
Etymology: After Bashkiria, the historical name for the Republic of Bashkortostan Russia, where the specmen was discovered.
= Cyathaspis sp indet OBRUCHEV, 1938

Holotype: No. 4650-1

Locality: Locality 2769, near the village of Irgizal, 15 km upstream of the mouth of the Siren-gupan River, right bank of this river, Belaya River basin, Soutehrn Urals, Bashkiria, European Russia.

Horizon:

Biostratigraphy:

Age: Ludlow Epoch, Late Siluran.

Material: Imprint of the external surface of the undivided dorsal dn ventral shields.

Paratypes:

No. 4650-2, 4650-3: