Scheltema 1998. Class Aplacophora. Valentich Scott, Paul; Blake, James A.[Eds]. Taxonomic atlas of the benthic fauna of the Santa Maria Basin and western Santa Barbara Channel. Volume 8. The Mollusca part 1. The Aplacophora, Polyplacophora, Scaphopoda, Bivalvia and Cephalopoda., Santa Barbara Museum of Natural History, Santa Barbara, 1998: i-viii, 1-250. Chapter pagination: 3-47