Меловой период

Jagt-Yazykova, E.A. (2011) Palaeobiogeographical and palaeobiological aspects of mid- and Late Cretaceous ammonite evolution and bio-events in the Russian Pacific // Scripta Geologica, 143: 15-121, 17 figs., 13 pls., Leiden, December 2011.

http://www.biologia.uni.opole.pl/biblio ... a_2011.pdf