Reconcavona gastracantha Krömmelbein, 1964

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 : 27

Reconcavona gastracantha Krömmelbein, 1964

Fig. 6 , 3a–c

1964a Reconcavona gastracantha n. sp. —Krömmelbein, p. 31–32, pl. 4, fig. 2.

Diagnosis: A middle-sized species of Reconcavona with the following peculiarities: a pointed postero-ventral spine on each valve, directed downwards and towards the posterior.

Holotype: Carapace, SMF Xe 4803.

Paratypes: 2 carapaces under SMF Xe 4804 .

Dimensions: Holotype, length 0.75mm, height 0.44mm, width 0.32mm.

Figures

FIGURE 3.

FIGURE 6. a = left lateral, b = dorsal, and c = right lateral views. 1a–c. Salvadoriella redunca posterior Krömmelbein, 1963. Holotype, C, SMF Xe 4662, l 0.95mm, h 0.46mm, w 0.41mm. 2a–c. Reconcavona impar Krömmelbein, 1964. Holotype, C, SMF Xe 4801, length 0.90mm, h 0.52mm, w 0.38mm (without spine). 3a–c. Reconcavona gastracantha Krömmelbein, 1964. Holotype, C, SMF Xe 4803, l 0.75mm, h 0.44mm, w 0.32mm. 4a–c. Reconcavona triebeli Krömmelbein, 1964. Holotype, C, SMF Xe 4805, l 0.74mm, h 0.41mm, w 0.28mm (without spine). 5a–c. Reconcavona agnata Krömmelbein, 1964. Holotype, C, SMF Xe 4808, l 0.99mm, h 0.52mm, w 0.33mm. 6a–c. Reconcavona verruculosa Krömmelbein, 1964. Paratype, C, SMF Xe 4810/1 (ex-SMF Xe 4810). Dimensions of Holotype: l 0.77mm, h 0.44mm, w 0.36mm. Paratype: l 0.75mm, h 0.44mm, w 0.27mm. 7a–c. Paracypridea obovata macacoensis Krömmelbein, 1964. Holotype, C, SMF Xe 4812, l 1.25mm, h 0.76mm, w 0.54mm. 8a–c. Paracypridea similis condylaris Krömmelbein, 1964. Holotype, C, SMF Xe 4814, l 1.25mm, h 0.85mm, w 0.56mm. 9a–c. Paracypridea elegans santantoniensis Krömmelbein 1964. Holotype, C, SMF Xe 4816, l 1.22mm, h 0.73mm, w 0.54mm. 10a–c. Paracypridea elegans inflata Krömmelbein, 1964. Holotype, C, SMF Xe 4818, l 1.02mm, h 0.67mm, w 0.54mm. 11a–c. Paracypridea maacki Krömmelbein, 1964. Holotype, C, SMF Xe 4821, l 0.96mm, h 0.55mm, w 0.53mm. 12a–c. Paracypridea bicallosa Krömmelbein, 1964. Holotype, C, SMF Xe 4824, l 1.08mm, h 0.74mm, w 0.70mm.