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: Astieriptychus ammonoid zone, Early/Lower Valanginian (140.2 - 136.4 Ma)
• 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 189593: authorized by Matthew Clapham, entered by Matthew Clapham on 03.11.2017
Creative Commons license: CC BY (attribution)
Taxonomic list
| Cephalopoda | |
"Euryptychites (Euryptychites) astieriptychus" = Polyptychites (Astieriptychites) astieriptychus, "Euryptychites (Propolyptychites) sp." = Virgatoptychites (Propolyptychites)
"Euryptychites (Euryptychites) astieriptychus" = Polyptychites (Astieriptychites) astieriptychus Voronetz 1958 ammonite
"Euryptychites (Propolyptychites) sp." = Virgatoptychites (Propolyptychites) Kemper 1964 ammonite | |
| Gastropoda | |
"Riselloidea sp." = Calliotropis (Riselloidea)
"Riselloidea sp." = Calliotropis (Riselloidea) Cossmann 1909 snail | |
|
Petropoma fulgens snail | |
| Bivalvia | |