Taas-Ary Island, spiniplicatus zone, lower Lena River (Triassic of Russian Federation)

Where: Russian Federation (71.8° N, 127.2° E: paleocoordinates 65.1° N, 18.3° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Olenikites spiniplicatus ammonoid zone, Spathian (251.3 - 247.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Preservation: mold/impression

Collection methods: Specimens in IGiG collection

Primary reference: A. S. Dagis and S. P. Ermakova. 1988. Boreal'nye Pozdneolenekskie Ammonoidei. Trudy Instituta Geologii i Geofiziki 714:1-135 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 123385: authorized by Matthew Clapham, entered by Matthew Clapham on 20.01.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Nautilida - Tainoceratidae
Phaedrysmocheilus subaratus2
Phaedrysmocheilus subaratus2 Keyserling 1847 nautiloid
 Ceratitida - Keyserlingitidae
Subolenekites altus, Keyserlingites subrobustus
Subolenekites altus Mojsisovics 1886 ceratite
grambergi or spiniplicatus zone
Keyserlingites subrobustus Mojsisovics 1886 ceratite
 Ceratitida - Sibiritidae
Olenekoceras middendorffi, Olenekoceras nikitini
Olenekoceras middendorffi Keyserling 1845 ceratite
grambergi or spiniplicatus zone
Olenekoceras nikitini Mojsisovics 1888 ceratite
 Ceratitida - Olenikitidae
Olenikites spiniplicatus, Pseudosvalbardiceras sibiricum
Olenikites spiniplicatus Mojsisovics 1886 ceratite
Pseudosvalbardiceras sibiricum Mojsisovics 1886 ceratite
 Phylloceratida - Nordophiceratidae
Nordophiceras karpinskii, Nordophiceras schmidti
Nordophiceras karpinskii Mojsisovics 1886 ammonite
Nordophiceras schmidti Mojsisovics 1886 ammonite
Bivalvia
 Pectinida -
"Streblopteria jakutica" = Streblopterinella jakutica1
"Streblopteria jakutica" = Streblopterinella jakutica1 Kurushin 1985 scallop
1Dagis et al. 1996; 2Sobolev 1989