List-Armitage & Hooper 2002. Discovery of Petromica Topsent in the Pacific Ocean: a revision of the genus with a new subgenus (Chaladesma, subgen. nov.) and a new species (P. (C.) pacifica, sp. nov.) (Porifera: Demospongiae: Halichondrida: Halichondriidae). Invertebrate Systematics, 16(5) 2002: 813-835