Cyprideis pebasae ( Purper, 1979 ), 1998

Gross, Martin, Ramos, Maria Ines F. & Piller, Werner E., 2014, On the Miocene Cyprideis species flock (Ostracoda; Crustacea) of Western Amazonia (Solimões Formation): Refining taxonomy on species level, Zootaxa 3899 (1), pp. 1-69 : 28

publication ID	https://doi.org/ 10.11646/zootaxa.3899.1.1
publication LSID	lsid:zoobank.org:pub:D78F2010-08E1-45C0-86FF-7F2D3601070D
persistent identifier	https://treatment.plazi.org/id/017587FE-FFB7-FFDC-71F4-DEC9FD58F83A
treatment provided by	Felipe
scientific name	Cyprideis pebasae ( Purper, 1979 )
status

Treatment

Cyprideis pebasae ( Purper, 1979)

Fig. 6g View FIGURE 6 ; Pl. 8, Figs. 34–43; Pl. 9, Figs. 1 View FIGURE 1 –24; Pl. 10, Figs. 45, 47, 51

1977 Cytheridea sp. nov. C—Purper: 363; Pl. 3, Figs. 1–4 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 .

* 1979 Cytheridea pebasae Purper , sp. nov. —Purper: 228–229; Pl. 2, Figs. 11–23.

1998 Cyprideis lacrimata sp. nov. —Muñoz-Torres et al.: 96; Text-fig. 2; Pl. 3, Figs. 7 View FIGURE 7 –11.

non 1998 Cyprideis pebasae ( Purper, 1979) —Muñoz-Torres et al.: 100; Pl. 4, Figs. 8–10 View FIGURE 8 View FIGURE 9 View FIGURE 10 .

non 1998 Cyprideis pebasae ( Purper, 1979) —Whatley et al.: 236; Text-fig. 2; Pl. 2, Figs. 16–20.

pars 2006 Cyprideis pebasae ( Purper, 1979) Whatley et al., 1998 emend.—Ramos: 90–91; Figs. 6i–y View FIGURE 6 . [non Figs. 6e–h View FIGURE 6 ] 2009 Cyprideis pebasae ( Purper, 1979) —Ramos et al.: 114; Figs. 295–298-I.

2010 Cyprideis pebasae ( Purper, 1979) —Wesselingh & Ramos: 308; Figs. 18.5c–d.

2011 Cyprideis lacrimata —Linhares et al.: 98; Fig. 3 View FIGURE 3 /12.

2011 Cyprideis pebasae —Linhares et al.: 95, 98; Figs. 4 View FIGURE 4 /3–4.

2013 Cyprideis pebasae ( Purper, 1979) —Gross et al.: 225–227; Pl. 5, Figs. 1 View FIGURE 1 –17.

Material. 66 valves; samples AM 10/3, 19, 23, 27, 42.

Dimensions (total range over all samples). R ♀ l = 0.64–0.80 (0.71), h = 0.34–0.40 (0.37; n = 7); L ♀ l = 0.67–0.86 (0.73), h = 0.36–0.45 (0.40; n = 8); R ♂ l = 0.79–0.93 (0.86), h = 0.37–0.41 (0.39; n = 2); L ♂ l = 0.71–0.91 (0.82), h = 0.34–0.43 (0.40; n = 4); Rj(A-1) l = 0.43–0.62 (0.54), h = 0.28–0.35 (0.33; n = 4); Lj(A-1) l = 0.55–0.60 (0.58), h = 0.34–0.37 (0.35; n = 4).

Remarks. This subrectangular–subtrapezoidal, coarsely punctate, asulcate species is similar to C. munoztorresi (see below and Gross et al. 2013) from which it differs by its widely spaced (“about seven”; Purper 1979) anteromarginal spines (compare for example Pl. 10, Figs. 47 and 48), the robust anteromarginal and posteroventral flange as well as the selvage runs more distally (right valves). C. munoztorresi exhibits up to eight, almost uniform posteroventral denticles (e.g. Pl. 10, Fig. 52), whereas they are only inconspicuously developed in C. pebasae (occasionally the lowermost develops into a short spine; Pl. 10, Fig. 51; compare i.e., Pl. 3, Fig. 11 in Muñoz-Torres et al. 1998). The inter- and intra-sample variability (mainly size, outline, ornament) of C. pebasae is shown on plates 8–9.

C. lacrimata of Muñoz-Torres et al. (1998) as well as C. pebasae with a “well pronounced anterior and ventroposterior marginal border” and with a “coarsely spinose” flange of Ramos (2006; compare Linhares et al. 2011) are synonyms of C. pebasae (see below and Gross et al. 2013).

Cyprideis purperi purperi Sheppard & Bate, 1980 and Cyprideis purperi colombiaensis Sheppard & Bate, 1980 , which are placed in the synonymy of C. pebasae by Ramos (2006), are sulcate Cyprideis taxa and display a finer ornament ( Sheppard & Bate 1980; Gross et al. 2013). Moreover, at least the specimen on plate 7, Fig. 13 (and probably Fig. 12) of Sheppard & Bate (1980) clearly belongs to C. sulcosigmoidalis ( Purper & Pinto 1985) .

Occurrence (of C. lacrimata sensu Muñoz-Torres et al. 1998 ). Western Amazonia ( Brazil, Colombia, Peru), late Middle to early Late Miocene ( C. caraionae – C. cyrtoma zone; Muñoz-Torres et al. 2006; chronostratigraphic correlation after Wesselingh & Ramos 2010).