NEW DATA ON THE TRACE FOSSIL, CRUZIANA SEMIPLICATA (FURONGIAN, WIŚNIÓWKA SANDSTONE FORMATION, POLAND): ORIGIN, ETHOLOGY AND PRODUCER
Grzegorz SADLOK
Institute of Paleobiology, Polish Academy of Sciences, ul. Twarda 51/55, PL- 00-818 Warszawa, Poland
address for correspondence: 77 Leadside Road, Aberdeen AB25 1RX, Aberdeenshire, Scotland, United Kingdom; e-mail: gregsadlok at gmail.com
