Where: Tajikistan (40.0° N, 70.5° E: paleocoordinates 11.5° S, 74.9° E)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Isfara Formation, Ludlow to Ludlow (427.4 - 419.2 Ma)
• PJW: Given the age & locality, this is Isfara River formation.
• formation-level stratigraphic resolution
Environment/lithology: marine; shelly/skeletal, black, gray, argillaceous limestone and calcareous siltstone
Size class: macrofossils
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 13976: authorized by Michael Foote, entered by Michael Foote on 06.05.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Crinoidea | |
Crinoidea indet. Miller 1821 Sea lily | |
Brachiopoda | |
Brachiopoda indet. Cuvier 1805 | |
Rhynchonellata | |
| |
Eoreticularia tschernyschewi, "Proreticularia carens" = Alaskospira
"Proreticularia carens" = Alaskospira | |
Gracianella lissumbra Johnson and Boucot 1967 | |
"Atrypella cf. columbella" = Atrypoidea, "Atrypella camelina" = Atrypoidea, "Atrypella linguata" = Atrypoidea
"Atrypella cf. columbella" = Atrypoidea
"Atrypella camelina" = Atrypoidea
"Atrypella linguata" = Atrypoidea | |
Trilobita | |
Trilobita indet. Walch 1771 trilobite | |
Encrinurus sp. Emmrich 1844 trilobite | |
Anthozoa | |
Anthozoa indet. Ehrenberg 1834 | |
Favositidae indet. Dana 1846 tabulate coral | |
Stromatoporoidea | |
Stromatoporoidea indet. stromatoporoid sponge |