crassa, Nansenia Lavenberg [R. J.] 1965:282, Fig. 1 [Copeia 1965 (no. 3); ref. 9226] Outer Santa Barbara Passage, Santa Catalina basin, California, U.S.A., about 33°17'N, 118°40'W, depth to 550 meters. Holotype: LACM 4425. Paratypes: LACM 4426-27 (1, 1); USNM 198144 (1). •Valid as Nansenia crassa Lavenberg 1965 -- (Merella et al. 1997:213 [ref. 23098], Love et al. 2005:28 [ref. 37547], Poulsen 2015:525 [ref. 33965], Love et al. 2021:48 [ref. 39279], Page et al. 2023:81 [ref. 40505]). Current status: Valid as Nansenia crassa Lavenberg 1965. Microstomatidae. Distribution: Eastern Pacific: southern California (U.S.A.) south to Pacific coast of Baja California Sur (Mexico). Habitat: marine.