October Revolution Island [Ust'-Spokojnaya Fm] (Silurian of Russian Federation)

Where: Russian Federation (79.5° N, 96.0° E: paleocoordinates 11.3° N, 7.0° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Ust'-Spokojnaya Formation, Ludlow (427.4 - 423.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Ust'-Spokojnaya Fm, which overlies the Samojlovich Fm, and is overlain by the Krasnaya Bukhta Fm. AGE: Ludlow. STRATIGRAPHIC POSITION: List probably representative of formation in the local area.

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified marl and lithified limestone

• SPECIFIC LITHOLOGY: Marlstones with interbedded limestones. LITHIFICATION: Lithified, on the basis of facies description.

Size class: macrofossils

Collection methods: COLLECTOR: Karatajute-Talimaa & Mark-Kurik (1978-1979), Blieck (1997, 2002) REPOSITORY: Not stated in text.

Primary reference: A. R. M. Blieck, V. N. Karatajute-Talimaa, and E. Mark-Kurik. 2002. Upper Silurian and Devonian heterostracan pteraspidomorphs (Vertebrata) from Severnaya Zemlya (Russia): a preliminary report with biogeographical and biostratigraphical implications. Geodiversitas 24(4):805-820 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 90326: authorized by Austin Hendy, entered by Austin Hendy on 16.07.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for heterostracan pteraspidomorphs. NOMENCLATURE: Not an authoritative publication, but with modern nomenclature and species resolution identifications.
 Thelodontida - Coelolepidae
Thelodus "sp. 1" Agassiz 1839
Thelodus sp. Agassiz 1839
Thelodus calvus Marss and Karatajute-Talimaa 2002
Pteraspidomorpha
 Cyathaspidiformes - Cyathaspididae
Cyathaspididae indet. Flower and Wayland-Smith 1952
Pteraspidomorphi
 Pteraspidomorphes -
Agnatha
 Loganelliformes - Loganelliidae
Loganelliidae indet. Karatajute-Talimaa 1997 jawless fish
Paralogania "sp. 1" Karatajute-Talimaa 1997 jawless fish
Paralogania consimilis Marss and Karatajute-Talimaa 2002 jawless fish
Paralogania cf. martinssoni Gross 1967 jawless fish
Loganellia cuneata Gross 1947 jawless fish
Gnathostomata
 Thelodonti -
Valiukia "sp. 1" Karatajute-Talimaa and Marss 2002
 Phlebolepidiformes - Katoporididae
Phlebolepis elegans Pander 1856