Maltan River, basin of the upper reaches of Kolyma River (Jurassic of Russian Federation)

Where: Russian Federation (61.5° N, 150.8° E: paleocoordinates 76.2° N, 177.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Late/Upper Pliensbachian (189.6 - 183.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified lithology not reported

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 135583: authorized by Matthew Clapham, entered by Matthew Clapham on 28.10.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

 Brachyura - Portunidae
"Rudirhynchia najahaensis" = Portunidae, "Rimirhynchia maltanensis n. sp." = Portunidae
"Rudirhynchia najahaensis" = Portunidae swimming crab
"Rimirhynchia maltanensis n. sp." = Portunidae swimming crab