Where: Ul'yanovsk, Russian Federation (54.4° N, 48.4° E: paleocoordinates 48.1° N, 50.3° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Speetoniceras versicolor ammonoid zone, Late/Upper Hauterivian (136.4 - 130.0 Ma)

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Primary reference: G. W. Storrs, M. S. Arkhangel'skii, and V. M. Efimov. 2000. Mesozoic marine reptiles of Russia and other former Soviet republics. In M. J. Benton, M. A. Shishkin, D. M. Unwin, E. N. Kurochkin (eds.), The age of dinosaurs in Russia and Mongolia 187-210 [R. Benson/R. Benson]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 138039: authorized by Roger Benson, entered by Roger Benson on 04.01.2013

Creative Commons license: CC BY (attribution)