Where: Ul'yanovsk, Russian Federation (54.6° N, 48.4° E: paleocoordinates 49.3° N, 50.0° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Virgatites virgatus zone, Late/Upper Jurassic (161.5 - 145.0 Ma)

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Primary reference: V. M. Efimov. 1999. A new family of Ichthyosaurs, the Undorosauridae fam. nov. from the Volgian stage of the European part of Russia. Paleontological Journal 33(2):174-181 [J. Alroy/E. Leckey/J. Tennant]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 28011: authorized by John Alroy, entered by Erin Leckey on 20.01.2003

Creative Commons license: CC BY (attribution)