Acta Palaeontologica Polonica

Concentrations of Silurian nautiloid cephalopods from Russia and Kazakhstan

Olga K. Bogolepova and Charles H. Holland

Acta Palaeontologica Polonica 40 (4), 1995: 429-440

Silurian cephalopod limestones known from northern Asia are usually singular beds or horizons of nodules. They range in their taphonomic character from the Mojero river type, with postmortem concentration from rich living populations by relatively gentle bottom currents into a submarine low, to that of the Karabutak Formation of the South Urals, where there has been concentration by strong wave or current action.

Key words: Nautiloid cephalopods, concentrations, Silurian, Russia, Kazakhstan.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (for details please see, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.