Ichnospecific variability of the Upper Cambrian Rusophycus from the Holy Cross Mts

Abstract

The rusophyci, i.e. the resting places of the trilobites from the Upper Cambrian deposits outcropping at Wielka Wiśniówka in the Holy Cross Mts, are presented and their variability explained. All these rusophyci belong to one ichnospecies Rusotphycus polonicus Orł., Radw. and Ron., the taxonomical importance of which is discussed. Regarded is also an ichnspecific variability of these trace fossils, being the result of various behavior of the trace-making trilobites and on the other hand, the effect of environmental conditions.