J. Alroy. 2008. Dynamics of origination and extinction in the marine fossil record. Proceedings of the National Academy of Sciences, USA 105:11536-11542.

Download measurements of fossil specimens belonging to different taxonomic groups

Saratov region, Semiluki stage - Flacon, Sierra de San Luis - Reklaw-locality 3 - Haunsberg, Oichinger Schicht - Shishkat section IV, Kshtut Formation - Stonehaven - Newport - Buzhai reefs