Pacific Ocean: central California (USA). [details]
Pacific Ocean: central California (USA). [details]
The specific epithet sanctaemariae refers to the type locality of the species, the Santa Maria Basin (off California). [details]
The specific epithet pacifica is derived from the distribution of the species off the U.S. Pacific coast. [details]
Soft sediments, at shelf and upper slope depths. [details]
Mixed sand and mud, and in sediments with no more than 2% sand, at upper slope depths. [details]
Off Purisima Point, Santa Maria Basin, California, Pacific coast of USA (35º05.50'N, 120º53.40'W), 161 m, soft ... [details]
Western Santa Barbara Channel, California, Pacific coast of the USA (34º08.67'N, 120º05.50'W), 443 m, soft substrate. [details]
Holotype (USNM 185995) deposited in the Smithsonian Institution, Washington D.C., USA. Paratypes (LACM-AHF Poly ... [details]
Holotype (USNM 185994) deposited in the Smithsonian Institution, Washington D.C., USA. Paratype (LACM-AHF Poly ... [details]