Where: Russian Federation (72.8° N, 108.0° E: paleocoordinates 74.3° N, 87.5° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Bidichotomus ammonoid zone, Late/Upper Valanginian (140.2 - 136.4 Ma)
• Triplodiptychus 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 189643: authorized by Matthew Clapham, entered by Matthew Clapham on 04.11.2017
Creative Commons license: CC BY (attribution)
Taxonomic list
| Cephalopoda | |
Polyptychites (Polyptychites) polyptychus, Polyptychites (Paleodichotomites) triplodiptychus, "Polyptychites (Dichotomites) bidichotomus" = Dichotomites (Dichotomites) bidichotomus
Polyptychites (Polyptychites) polyptychus Keyserling 1846 ammonite
Polyptychites (Paleodichotomites) triplodiptychus Pavlow 1892 ammonite
"Polyptychites (Dichotomites) bidichotomus" = Dichotomites (Dichotomites) bidichotomus d'Orbigny 1841 ammonite | |
|
Bochianites sp. Lory 1898 ammonite | |
| Bivalvia | |
|
Mclearnia sp. Crickmay 1930 scallop | |
|
Buchia sublaevis scallop | |