Kunjak Stage, Unit 23, Isfara River S-D Section (Devonian of Tajikistan)

Where: Tajikistan (40.0° N, 70.5° E: paleocoordinates 7.7° S, 74.2° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Lochkovian (419.2 - 410.8 Ma)

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

• "The investigated sections are found at the southern margin of the basin where limestones continuously accumulated during Upper Silurian and Devonian time.."
• "(23) LImestones, light grey to dark grey and black, partly organogenous-clastic with clearly-crystalline, fine-grained cement, partly pelitomorphic..."

Primary reference: J. S. Biske, V. B. Gorianov, and M. A. Rzonsnickaja. 1977. Tien-Shan. In A. Martinsson (ed.), The Silurian-Devonian boundary IUGS Serie(5):227-237 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 13979: authorized by Michael Foote, entered by Michael Foote on 06.05.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Anthozoa
 Favositida - Favositidae
Emmonsiella saaminica tabulate coral
 Cystiphyllida - Holmophyllidae
Holmophyllum spp. Wedekind 1927 horn coral
 Stauriida - Lykophyllidae
Rhynchonellata
 Atrypida - Septatrypidae
Atrypella aff. scheii Holtedahl 1914
 Orthida - Dalmanellidae
 Pentamerida - Clorindidae
Strophomenata
 Strophomenida - Amphistrophiidae