Where: Ulyanovsk, Russian Federation (54.5° N, 48.4° E: paleocoordinates 48.2° N, 50.3° E)

• coordinate based on unpublished field data

• hand sample-level geographic resolution

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

• Upper portion of the Speetoniceras versicolor Zone, upper Hauterivian, Lower Cretaceous on the right bank of the Volga river. The horizon is level g-5 in local stratigraphy

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, nodular, phosphatic, pyritic shale and lithified siltstone

Size class: macrofossils

Preservation: original phosphate, replaced with pyrite

Collected by G.N. Uspensky and colleagues in 2002

Collection methods: quarrying, surface (in situ), chemical, mechanical, ,

Primary reference: V. Fischer, R. B. J. Benson, N. G. Zverkov, L. C. Soul, M. S. Arkhangelsky, OLambert, I. M. Stenshin, G. N. Uspensky, and P. S. Druckenmiller. 2017. Plasticity and convergence in the evolution of short-necked plesiosaurs. Current Biology 27:1-10 [V. Fischer/V. Fischer]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 185940: authorized by Valentin Fischer, entered by Valentin Fischer on 25.05.2017

Creative Commons license: CC BY (attribution)