Kovachinskaya Formation (Eocene of Russian Federation)

Where: Kamchatka, Russian Federation (58.5° N, 159.0° E: paleocoordinates 62.1° N, 160.7° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Kovachinskaya Formation, Bartonian (41.3 - 38.0 Ma)

• conformably overlies the Snatolskaya Fm

• formation-level stratigraphic resolution

Environment/lithology: offshore; lithified, fine-grained, sandy mudstone and tuff

• marine siltstone, claystone and sandstone with numerous tuff horizons

Preservation: original aragonite

Collection methods: surface (in situ),

• gastropods only

Primary reference: A. E. Oleinik. 2001. Eocene gastropods of western Kamchatka - implications for high-latitude north Pacific biostratigraphy and biogeography. Palaeogeography, Palaeoclimatology, Palaeoecology 166:121-140 [L. Ivany/L. Ivany/L. Ivany]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 5946: authorized by Linda Ivany, entered by Sarah DeLong on 03.01.2000, edited by Linda Ivany

Creative Commons license: CC BY (attribution)

Taxonomic list

• gastropods only
 Ptenoglossa - Epitoniidae
Epitonium (Boreoscala) sp. Kobelt 1905 wentletrap
 Cephalaspidea - Cylichnidae
 Neogastropoda - Olividae
Ancilla kovatschensis Oleinik 1991 olive snail
 Neogastropoda - Buccinidae
Beringius (Beringius) pressulus Titova 1986 true whelk
Trominina dispar true whelk
Trominina sp. Oyama and Mizuno 1958 true whelk
Colus (Aulacofusus) asagaensis Makiyama 1934 true whelk
 Neogastropoda - Nassariidae
Molopophorus sp. Gabb 1869 snail
 Neogastropoda - Fasciolariidae
Fusinus (Fusinus) sp. Rafinesque 1815 snail
 Neogastropoda - Cancellariidae
 Neogastropoda - Volutidae
Fulgoraria (Musashia) sp. Hayashi 1966 volute
 Neogastropoda - Muricidae
Mipus vinjukovia murex snail
 Neogastropoda - Ptychatractidae
Exilia sp. Conrad 1860 snail
 Neogastropoda - Cochlespiridae
 Neogastropoda - Drilliidae
Antimelatoma sp. Powell 1942 snail
 Neogastropoda - Turridae
 Neogastropoda - Pseudomelatomidae
 Calyptraeoidea - Calyptraeidae
Calyptraea diegoana Conrad 1857 slipper shell
 Calyptraeoidea - Trichotropidae
"Crepidula pileum" = Spirocrypta pileum
"Crepidula pileum" = Spirocrypta pileum Gabb 1864 snail
 Sorbeoconcha - Turritellidae
 Pyramidelloidea - Pyramidellidae
 Turbinoidea - Turbinidae
Homalopoma ? sp. Carpenter 1864 snail
 Trochoidea - Trochidae