Palaeoconchocelis starmachii gen. n., sp. n., an endolithic rhodophyte (Bangiaceae) from the Silurian of Poland

Palaeoconchocetis starmachii gen. n., sp. n. an endolithic microalga (Bangiaceae, Rhodophyta) is formally described. It is preserved both as a body fossil (the organism) and a trace fossil (the borings) in crinoid columnal fragments within carbonate rocks of Silurian (Ludlovian) age. The rocks were obtained from a core (the 544.9 meter depth) at Widowo near Bielsk Podlaski, Poland.