Lower Siyak Beds of unnamed (Bezymyannyi) Stream section (Devonian of Russian Federation)

Where: Bashkir, Russian Federation (53.1° N, 57.4° E: paleocoordinates 0.5° N, 16.3° E)

• coordinate based on nearby landmark

When: Lower Siyak Beds Formation, Lochkovian (419.2 - 410.8 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; shelly/skeletal, gray limestone

• "...(6) Grey, massive limestones...(8) grey massive limestones, locally crinoidal..."

Primary reference: A. P. Tyazheva and R. A. Zhavoronkova. 1977. Southern Urals. in A. Martinsson, ed. The Silurian-Devonian boundary (IUGS, Series A, Number 5). Schweizerbart'sche, Stuttgart. 203-210 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 13955: authorized by Michael Foote, entered by Michael Foote on 06.05.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Anthozoa
 Stauriida - Fasciphyllidae
 Stauriida - Ptenophyllidae
 Stauriida - Pycnostylidae
Zelophyllum sp. Wedekind 1927 horn coral
 Cystiphyllida - Tryplasmatidae
 Favositida - Favositidae
Favosites kozlowskii tabulate coral
 Favositida - Cleistoporidae
Riphaeolites ramosus tabulate coral
 Favositida - Pachyporidae
"Trachypora aff. spica" = Thamnoptychia, Cladopora actuosa
"Trachypora aff. spica" = Thamnoptychia tabulate coral
Cladopora actuosa tabulate coral
Strophomenata
 Strophomenida - Douvillinidae
Rhynchonellata
 Rhynchonellida - Camarotoechiidae
Camarotoechia bieniaszi
genus name in quotes
 Rhynchonellida - Hebetoechiidae
 Rhynchonellida - Innaechiidae
 Orthida - Dicoelosiidae
Dicoelosia biloba Linnaeus 1758
 Atrypida - Septatrypidae
? Septatrypa zelia Barrande 1879
[entered as Septratrypa zelia]
 Atrypida - Atrypinidae
 Atrypida - Lissatrypidae
 Pentamerida - Gypidulidae
 Spiriferida - Spiriferidae
"Howellella ex gr. mercurii" = Spirifer mercurii
"Howellella ex gr. mercurii" = Spirifer mercurii Gosselet 1880
 Athyridida - Rhynchospirinidae
 Athyridida - Athyrididae
 Athyridida - Meristidae