Type species: Bairdoppilata martyni Coryell, Sample & Jennings, 1935 (original designation).
Remarks. Most of the following systematic section on the genus Bairdoppilata deals with specimens previously assigned to Bairdoppilata simplex (Brady, 1880). Bairdoppilata simplex is one of the species described by Brady (1880) which was subsequently recorded from many distant localities, in this specific case, from the Southern Hemisphere (Fig. 0 3, Tab. 3), including the Pacific (Brady 1890, Chapman 1902), the Atlantic (Eastern: Dingle 2003; and Western: Whatley et al. 1995, 1996, 1997 a), and the Southern oceans (Brady 1880, Dingle 2000, Hartmann 1989, 1993, 1997, Maddocks 1969, Neale 1967, Whatley et al. 1998 b). Several of these records obviously do not involve the species B. simplex and also involve other bairdioid genera (see examples in Fig. 3.3, 3.6, 3.11 b, 3.12, 3.22, 3.24). This is the case, for example, of the specimens from the “Gausstation” (Indic Sector of the Southern Ocean, 385m), which were described by Müller (1908) as Nesidea labiata, and later considered a junior synonym of B. simplex (Maddocks 1969: 77). The restudy of part of the specimens previously assigned to B. simplex shows that more than ten different species are represented (see below), and that B. simplex is restricted to its type locality (off Heard Island).