†Protobalanus spinicoronatus Vinther et al. 2012 (chiton)
Polyplacophora - Multiplacophora - Hercolepadidae
Full reference: J. Vinther, P. Jell, G. Kampouris, R. Carney, R. A. Racicot and D. E. G. Briggs. 2012. The origin of multiplacophorans – convergent evolution in Aculiferan molluscs. Palaeontology 55(5):1007-1019
Belongs to Protobalanus according to J. Vinther et al. 2012
Sister taxa: none
Type specimen: CMC 53909 (a complete, partially disarticulated specimen). Its type locality is Medusa Portland Cement Company North Quarry, Silica, bioherm, which is in a Givetian reef, buildup or bioherm limestone in the Silica Formation of Ohio.
Ecology: facultatively mobile epifaunal grazer
Average measurements (in mm): a complete, partially disarticulated specimen 8.00 x 6.00