• Clavigerinella nazcaensis Quilty, 1976:650, pl.18, figs.1-12 [Oligocene Zone N2-N3 transition, DSDP Hole 320B, Nazca Plate, southeastern Pacific Ocean].
• Hastigerinoides (?) sp. Jenkins and Orr, 1972:1106, pl. 37, fig. 7 [lower Oligocene Chiloguembelina cubensis Zone, Nazca Plate, southeastern Pacific Ocean].

The type material from DSDP Site 320 is somewhat recrystallized, however areas of wall texture are exposed that indicate the presence of a bulloides-type wall and thus support an affiliation with Globigerinella. Quilty (1976) identified Clavigerinella akersi from the Eocene as the possible ancestor of Globigerinella nazcaensis. However, Clavigerinella has a weakly developed cancellate wall texture (Coxall and Pearson, 2006). Derivation of Clavatorella bermudezi from Q. nazcaensis, as suggested by Quilty (1976) is also unlikely on the grounds of wall texture differences. Clavatorella bermudezi possess a strongly cancellate, nonspinose wall texture whereas Q. nazcaensis appears to be related to Globigerinella. Although Quilty (1976) described the aperture of this species as lacking any rim or lip, reinvestigations of samples from Site 320 provided well-preserved specimens clearly showing a thick rim bordering the aperture.

Popescu and Brotea (1989) also recognized similarities between P. rohiensis and Q. nazcaensis, and identified potential differences only in the less incised sutures in the young stage, and relatively shorter radially elongated chambers. However, they included in the species Protentella rohiensis a large variability of morphologies, including specimens with radially elongated chambers, very similar to Quiltyella clavacella (see Popescu and Brotea, 1989, pl. I, figs. 4, 5), and specimens with only one or two radially elongated chamber more resembling G. clavaticamerata or G. molinae (see Popescu and Brotea, 1989, pl. I, figs. 11, 12 and 9, 10, respectively). While there may be a case to place at least some of Popescu and Brotea’s examples of P. rohiensis in Q. nazcaensis, we suggest this as an unnecessary complication, and currently untestable due to the lack of material. We thus regard all of the extreme elongated forms of P. rohiensis (Popescu and Brotea, 1989, pl. I, figs. 1, 2 and 4, 5) as Q. clavacella, while other less clavate forms (Popescu and Brotea, 1989, pl. I, figs. 7, 8 and 11, 12) are referred to G. clavaticamerata. [Spezzaferri et al. 2018]

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