Vilyuy River, below mouth of Iligir River (Jurassic of Russian Federation)

Where: Russian Federation (62.0° N, 116.4° E: paleocoordinates 72.6° N, 112.1° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Dactylioceras commune ammonoid zone, Bifrons (182.0 - 175.6 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Collection methods: Repository: IGiG (Institute for Geology and Geophysics, Novosibirsk)

Primary reference: A. S. Dagys. 1968. Yurskie i Rannemelovye brakhiopody Severa Sibiri. Akademiya Nauk SSSR, Sibirskoe Otdelenie Trudy Instituta Geologii I Geofiziki 1-167 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 135597: authorized by Matthew Clapham, entered by Matthew Clapham on 28.10.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

 Rhynchonellida - Tetrarhynchiidae
Tetrarhynchia viluensis n. sp. Dagys 1968
? Tetrarhynchia jakutica n. sp. Dagys 1968