Where: Russian Federation (73.7° N, 111.0° E: paleocoordinates 75.5° N, 88.0° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Ramulicosta ammonoid zone, Early/Lower Valanginian (140.2 - 136.4 Ma)
• Ramulicosta subzone
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified shale
Size class: macrofossils
Collected by Bogomolov in 1984
Primary reference: Y. I. Bogomolov. 1989. Poliptikhity (Ammonity) i biostratigrafiya boreal'nogo Valanzhina. Akademiya Nauk SSSR, Sibirskoe Otdelenie Trudy Instituta Geologii I Geofiziki 696:1-199 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 189596: authorized by Matthew Clapham, entered by Matthew Clapham on 03.11.2017
Creative Commons license: CC BY (attribution)
Taxonomic list
| unclassified | |
| Cephalopoda | |
"Euryptychites (Euryptychites) astieriptychus" = Polyptychites (Astieriptychites) astieriptychus, "Siberites cf. ascendens" = Polyptychites (Polyptychites) ascendens, "Siberites ramulicosta" = Polyptychites (Polyptychites) ramulicosta
"Euryptychites (Euryptychites) astieriptychus" = Polyptychites (Astieriptychites) astieriptychus Voronetz 1958 ammonite
"Siberites cf. ascendens" = Polyptychites (Polyptychites) ascendens Koenen 1902 ammonite
"Siberites ramulicosta" = Polyptychites (Polyptychites) ramulicosta Pavlow 1892 ammonite | |
| Bivalvia | |
|
Buchia sublaevis scallop
Buchia ex gr. keyserlingi Lahusen 1888 scallop | |