Facies A2, Middle Shanda Beds, type Telengitian (Gur'evsk area) (Devonian of Russian Federation)

Also known as Reef 3885

Where: Russian Federation (54.3° N, 85.9° E: paleocoordinates 30.7° N, 17.5° E)

• coordinate based on political unit

• local area-level geographic resolution

When: Lower Shanda Beds Member (Shanda Horizon Formation), Late/Upper Emsian (402.5 - 391.9 Ma)

• Here are the subdivisions of the Telengitian Stage in type locality. Authors correlate stage roughly with Emsian, but note that the Salairka Horizon is said to correlate with the dehiscens Zone, which, according to Harland et al. 1990 is Pragian.

•JA: originally entered as Emsian; the serotinus zone is late Emsian

•Telengitian Stage Shanda Horizon Upper Shanda Beds c.partitus/c.patulus Zone

•Telengitian Stage Shanda Horizon Middle Shanda Beds serotinus Zone

•Telengitian Stage Shanda Horizon Lower Shanda Beds P.n.sp./inversus Zone

•Telengitian Stage Belovo Horizon gronbergi Zone

•Telengitian Stage Salairka Horizon Upper Salairka Beds dehiscens Zone

•Telengitian Stage Salairka Horizon Middle Salairka Beds dehiscens Zone

•Telengitian Stage Salairka Horizon Lower Salairka Beds dehiscens Zone

• formation-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified reef rocks and lithified limestone

• Initiation of Telengitian marked by transgression, and termination by regression. Smaller cycles within the stage.
• Beds in type sections divided into a number of facies and subfacies:

•A: "consists mainly of biogenic-clastic limestone."

• A1: "coral limestones interbedded with siltstones and mudstones containing plant remains"

• A2: "massive reefal limestones" / "biogenic-clastic limestones, locally with coral bioherms"

•B: "composed chiefly of mudstones"

• B1: "interbedded with limestones and richly fossiliferous"

• B2: "barren"

•C: "consists of bedded, platy, clayey limestones locally marked by traces of subaqueous slumping"

•D: "may be equated with a sandy-muddy member with abundant plant remains"

Size class: macrofossils

Primary reference: E. A. Yolkin, R. T. Gratsianova, N. K. Bakharev, N. E. Izokh, A. Yu Yazikov, L. V. V'yushkova, V. A. Zheltonogova and N. M. Petrosyan. 1988. Facies and faunal associations of the Telengitian (Emsian) in its type locality. In N. J. McMillan, A. F. Embry, D. J. Glass (eds.), Devonian of the World, Volume III 193-207 [M. Foote/M. Foote/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 35719: authorized by Michael Foote, entered by Michael Foote on 05.01.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Material listed includes fish, plants, conodonts, ostracods, brachiopods, and rugose corals. Bryozoans, trilobites, tabulate corals, and crinoids are also known from these sections, but these have not been studied as completely and are not reported here.
unclassified
  -
Ostracoda
 Podocopida -
Bairdiohealdites karcevae ostracod
listed as "Bardiohealdites"
 Podocopida - Bairdiocyprididae
 Podocopida - Pachydomellidae
 Podocopida - Bairdiidae
 Palaeocopida - Amphissitidae
 Palaeocopida -
Conodonta
 Panderodontida - Panderodontidae
Panderodus sp. Ethington 1959 conodont
 Ozarkodinida - Polygnathidae
Pandorinellina sp. Müller and Müller 1957 conodont
  - Strachanognathidae
Belodella sp. Ethington 1959 conodont
Strophomenata
 Strophomenida - Douvillinidae
 Strophomenida - Strophodontidae
"Megastrophia (Megastrophiella) uralensis" = Megastrophia (Megastrophia) uralensis
"Megastrophia (Megastrophiella) uralensis" = Megastrophia (Megastrophia) uralensis de Verneuil 1845
Rhynchonellata
 Athyridida - Athyrididae
 Pentamerida - Gypidulidae
 Atrypida - Carinatinidae
 Atrypida - Atrypidae
 Rhynchonellida - Uncinulidae
 Rhynchonellida - Hebetoechiidae
 Rhynchonellida - Hypothyridinidae
Anthozoa
 Stauriida - Fasciphyllidae
 Stauriida - Acrophyllidae
Acrophyllum typus horn coral
listed as "Arcophyllum"
 Stauriida - Kyphophyllidae