Colour pattern in the Middle Devonian rhynchonellid brachiopods from the Holy Cross Mts

Abstract

Specimens of ?Solidipontirostrum radwanskii sp. n. occurring in the Middle Devonian brachiopod shales from the Holy Cross Mts, Central Poland, exhibit peculiar, spotted to acutely-angular-banded colour patterns, slightly differing on each valve of the shell. This patterning is interpreted as a relic of original colouration preserved in the fossil state.