Paracypridea similis Krömmelbein, 1961

Bate, Raymond H., Horne, David J., Horne, Sarah E., Douglas, Lyndsey, Miller, Giles & Lord, Alan R., 2022, Non-marine Ostracoda (Crustacea) of the Early Cretaceous ‘ Pre-Salt’ sediments of Brazil: An illustrated catalogue of the type specimens of Wicher, Krömmelbein, Krömmelbein & Weber, and Bate, Zootaxa 5098 (1), pp. 1-84 : 11

Paracypridea similis Krömmelbein, 1961

1961 Paracypridea similis n. sp. —Krömmelbein, p. 359–360, pl. 4, figs 19–24.

Diagnosis: A medium-sized Paracypridea species , closely related to P. obovata obovata , with the following peculiarities: carapace in lateral view a short trapezoid shape, rounded. In dorsal view biconvex, maximum carapace width behind the middle; weak indentation of the sides shortly in front of the middle. Rostrum very small, rounded; post-rostral groove rounded, weakly developed; no distinctive rostral sulcus. - Form a [pl. 4, figs 19–21]: dorsal margin more or less straight, horizontal, running more or less parallel to the ventral margin. - Form b [pl. 4, figs 22–24]: dorsal margin distinctly rising towards the posterior. Concave indentation above the posterior end, distinctly developed on the right valve. Posterior margin in the indented area inclining significantly more steeply than in P. subovata subovata .

Fig 2 , 4a–c

Holotype: Carapace, Form b, SMF Xe 3667.

Dimensions: Holotype, length 1.23mm, height 0.75mm.

Remarks (Bate et al. herein): SMF Xe 3666 also figured.

Fig. 2 , 5a–c

Paratypes: Carapace, Form a, SMF Xe 3666; plus 4 carapaces under SMF Xe 3672 .

Dimensions: Paratype, Form a, SMF Xe 3666, length 1.20mm, height 0.75mm .

Remarks (Bate et al. herein): Forms a and b are dimorphs.

Figures

FIGURE 2. a = left lateral, b = dorsal, and c = right lateral views. 1a–c. Gomphocythere forbesii (Jones, 1885) ssp. of Wicher, 1959. Holotype, C ♂, T.-K.-Nr. 3181, l 0.78mm, h 0.43mm, w 0.38mm. 2a–c. Paracypridea quadrirugosa weberi Krömmelbein, 1961. Holotype, C, Form b dimorph, SMF Xe 3661, l 1.82mm, h 1.04mm. 3a–c. Paracypridea quadrirugosa weberi Krömmelbein, 1961. Paratype, C, Form a dimorph, SMF Xe 3660, l 1.45mm, h 0.93mm. 4a–c. Paracypridea similis Krömmelbein, 1961. Holotype, C, Form b, SMF Xe 3667, l 1.23mm, h 0.75mm. 5a–c. Paracypridea similis Krömmelbein, 1961. Paratype, C, Form a, SMF Xe 3666, l 1.20mm, h 0.75mm. 6a–c. Paracypridea langdoni Krömmelbein, 1961. Holotype, C, Form b, SMF Xe 3674, l 1.15mm, h 0.64mm. 7a–c. Paracypridea langdoni Krömmelbein, 1961. Paratype, C, Form a, SMF Xe 3673, l 1.01mm, h 0.69mm. 8a–c. Paracypridea brasiliensis Krömmelbein, 1961. Paratype, C, SMF Xe 3677/1 (ex SMF Xe 3677); l 0.94mm, h 0.65mm, w 0.51mm. 9a–c. Cypridea lunula Krömmelbein, 1962. Holotype, C, SMF Xe 4167, l 0.69mm, h 0.47mm. 10a–c. Cypridea nannorostrata Krömmelbein, 1962. Holotype, C, SMF Xe 4169, l 0.83mm, h 0.47mm. 11a–c. Cypridea histrix Krömmelbein, 1962. Holotype, C, SMF Xe 4173, l 0.94mm, h 0.60mm. 12a–c. Cypridea histricoides Krömmelbein, 1962. Holotype, C, SMF Xe 4175, l 0.87 mm, h 0.54 mm.

FIGURE 4. a = left lateral, b = dorsal, and c = right lateral views. 1a–c. Cypridea (Sebastianites?) mataensis vercellinoi Krömmelbein, 1962. Holotype, C, SMF Xe 4201, l 1.12mm, h 0.78mm. 2a–c. Cypridea (Sebastianites?) onusta Krömmelbein, 1962. Holotype, C, SMF Xe 4205, l 1.20mm, h 0.78mm. 3a–c. Cypridea (Sebastianites?) sostensis Krömmelbein, 1962. Holotype, C, SMF Xe 4191, l 0.97mm, h 0.57mm. 4a–c. Cypridea (Morinina?) bibullata tribullata Krömmelbein, 1962. Holotype, C, SMF Xe 4212, l 0.99mm h 0.56mm. 5a–c. Cypridea (Morinina?) langei Krömmelbein, 1962. ‘Hypotype’, C, SMF Xe 4216, l 1.25 mm, h 0.66 mm. 6a–c. Cypridea (Morininoides) candeiensis Krömmelbein, 1962. Holotype, C, SMF Xe 4217, l 0.93mm, h 0.55mm. 7a–c. Cypridea (Morininoides) hadronodosa Krömmelbein, 1962. Holotype, C, SMF Xe 4222, l 1.06mm, h 0.70mm. 8a–c. Paracypridea elegans Krömmelbein, 1962. Holotype, C, SMF Xe 4165, l 1.05mm, h 0.59mm. 9a–c. Candona? gregaria Krömmelbein, 1962. Holotype, C, SMF Xe 4225, l 1.98mm, h 1.09mm. 10a–c. Candona? condensa Krömmelbein, 1962. Holotype, C, SMF Xe 4227, l 0.96mm, h 0.74mm. 11a–c. Candona? redunca Krömmelbein, 1962. Holotype, C, SMF Xe 4229, l 0.84mm, h 0.51mm. 12a–c. Reconcavona cancellata Krömmelbein, 1962. Holotype, C, SMF Xe 4236, l 0.81mm, h 0.47mm.

FIGURE 5. a = left lateral, b = dorsal, and c = right lateral views. 1a–c. Reconcavona swaini Krömmelbein, 1962. Holotype, C, SMF Xe 4238, l 0.79mm, h 0.46mm. 2a–c. Reconcavona centronodosa Krömmelbein, 1962. Holotype, C, SMF Xe 4240, l 0.67mm, h 0.41mm. 3a–c. Reconcavona uncinata Krömmelbein, 1962. Holotype, C, SMF Xe 4242, l 0.73mm, h 0.33mm. 4a–c. Reconcavona uniacantha Krömmelbein, 1962. Holotype, C, SMF Xe 4244, l 0.94mm, h 0.55mm. 5a–c. Ilyocypris sp. in Krömmelbein, 1962. C, SMF Xe 4246. l 0.65mm, h 0.35mm, w 0.31mm. 6a–c. Dolerocypris? marfinensis Krömmelbein, 1962. Holotype, C, SMF Xe 4248, l 0.78 mm, h 0.47 mm. 7a–c. Coriacina coriacea Krömmelbein, 1962. Holotype, C, SMF Xe 4259, l 0.73mm h 0.47mm. 8a–c. Ilhasina remanei remanei Krömmelbein, 1963. Holotype, C, SMF Xe 4650, l 0.76mm, h 0.45mm, w 0.34mm. 9a–c. Ilhasina remanei cuneiformis Krömmelbein, 1963. Holotype, C, SMF Xe 4652, l 0.71mm, h 0.40mm, w 0.40mm. 10a–c. Ilhasina torosa Krömmelbein, 1963. Holotype, C, SMF Xe 5654, l 0.89mm, h 0.54mm, w 0.54mm. 11a–c. Ilhasina amphotera Krömmelbein, 1963. Holotype, C, SMF Xe 4656, l 0.79mm, h 0.38mm, w 0.34mm. 12a–c. Salvadoriella redunca comitans Krömmelbein, 1963. Holotype, C, SMF Xe 4660, l 0.88mm, h 0.48mm, w 0.34mm.