Valnev Horizon (upper part), platform facies, SW Novaya Zemlya (Devonian of Russian Federation)

Where: Arkhangel'skaya Oblast', Russian Federation (72.0° N, 52.0° E: paleocoordinates 3.1° N, 0.4° W)

• coordinate estimated from map

• basin-level geographic resolution

When: Pandorinellina exigua exigua conodont zone, Valnev Formation, Pragian (410.8 - 407.6 Ma)

• Upper part of Valnev Horizon corresponds to the Nymphorhynchia pseudolivonia Lona. "A Lona is a regional taxonomic unit, subordinate to a horizon and corresponding to a minor phase in the development of the basin and in the evolution of the organic world."

• formation-level stratigraphic resolution

Environment/lithology: marine; dolomitic limestone and shale

• Shallow-water carbonate platform.
• Lithologies read off of stratigraphic chart (fig. 2): dolomitized limestone; shale interbeds; calcarenite; layered limestones, bioherms, and reefs

Size classes: macrofossils, mesofossils, microfossils

Collection methods: Faunal list from Fig. 3

Primary reference: S. V. Cherkesova. 1988. Lower and Middle Devonian marine deposits of the Soviet arctic and the correlation with arctic Canada. In N. J. McMillan, A. F. Embry, and D. J. Glass (eds.), Devonian of the World, Volume III 669-679 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 40701: authorized by Michael Foote, entered by Michael Foote on 28.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Pribilina aff. inaequicostata
Pribylina is valid name of an ostracode; this is listed under trilobites
Anthozoa
 Favositida - Alveolitidae
Alveolites distinctus tabulate coral
 Favositida - Favositidae
Favosites ex gr. goldfussi Lecompte 1939 tabulate coral
 Cystiphyllida - Cystiphyllidae
Zonophyllum polaricum, "Lythophyllum originale" = Lythophyllum, "Patridophyllum obliterum" = Lythophyllum
"Lythophyllum originale" = Lythophyllum horn coral
"Patridophyllum obliterum" = Lythophyllum horn coral
 Stauriida - Ptenophyllidae
 Stauriida - Lykophyllidae
Conodonta
 Prioniodontida - Icriodontidae
 Ozarkodinida - Polygnathidae
Bivalvia
 Nuculida - Nuculidae
 Modiomorphida - Modiomorphidae
Stenolaemata
 Cryptostomata - Semicosciniidae
 Cryptostomata - Fenestellidae
Rhynchonellata
 Rhynchonellida - Trigonirhynchiidae
 Spiriferida - Delthyrididae
Tentaculita
 Nowakiida - Nowakiidae
Trilobita
 Proetida - Proetidae
Schizoproetina borealis Maksimova 1960 trilobite
Wolayella polaris Maksimova 1977 trilobite
 Proetida - Tropidocoryphidae
Denemarkia cf. frontalis Hawle and Corda 1847 trilobite