Rusophycus by Any Other Name Is Still Rusophycus carleyi

Rusophycus carleyi (James, 1885 James, J. F. 1885. The fucoids of the Cincinnati Group, Pt. 2. Journal of the Cincinnati Society of Natural History, 7:151–166. [Google Scholar]) is an ichnospecies that encompasses a variety of sizes and morphological variations that can be attributed to substrate-organism interaction(s) and taphonomic variation(s). R. carleyi ranges from the Cambrian to the Late Ordovician, with a cosmopolitan (global) distribution. Four ichnospecies are identified as junior synonyms of R. carleyi: morgati, moyensis, polonicus and radialis.