Where: Russian Federation (63.4° N, 177.0° E: paleocoordinates 55.5° N, 71.2° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Lacian to Lacian (221.5 - 212.0 Ma)
• Lower-middle Norian
• group of beds-level stratigraphic resolution
Environment/lithology: lithified limestone
Size class: macrofossils
Collection methods: Repository: SVPGO (North-Eastern Production Geological Association museum)
Primary reference: Y. M. Bychkov. 1985. Pozdnetriasovye mollyuski Khrebta Kenkeren (Koryakskoe Nagorye). Dvustvorchatye i Golovonogie Mollyuski Mezozoya Severo-Vostoka SSSR 5-24 [M. Clapham/M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 136161: authorized by Matthew Clapham, entered by Matthew Clapham on 20.11.2012
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Maoritrigonia beringica Bychkov 1985 clam
Maoritrigonia chekhovi n. sp. Bychkov 1985 clam
Trigonia (Kumatrigonia) nemtinovi n. sp. Bychkov 1985 clam |