Theriosynoecum quadrinodosum Krömmelbein & Weber, 1971

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 : 54

Theriosynoecum quadrinodosum Krömmelbein & Weber, 1971

Fig. 13 , 7a–c and 8a–c

1971 Theriosynoecum quadrinodosum n. sp. —Krömmelbein & Weber, p. 62–63, pl. 12, figs 54–55 (and fig. 56 = aberrant form).

Diagnosis: A new Theriosynoecum species , presumably from the roberti -group, with the following peculiarities: four rounded to more or less stretched out node-like valve swellings, directed slightly towards the posterior, on the posterior field of each valve. A node in each of the postero-ventral, posterior, anterior postero-dorsal and posterior ventro-median positions.

Holotype: Carapace ♀, BfB 7831.

Paratype: Carapace ♂, BfB 7832.

Dimensions: ♀ Holotype, length 0.70mm, height 0.40mm, width 0.37mm.

Dimensions: ♂ Paratype, length 0.70mm, height 0.39mm, width 0.31mm.

Remarks (Bate et al. herein): An ‘aberrant carapace’ ♂, BfB 7833, also noted by Krömmelbein & Weber (1971, p. 63).

Figures

FIGURE 7. a = left lateral, b = dorsal, and c = right lateral views. 1a–c. Cypridea tucanoensis Krömmelbein, 1965. Holotype, C, SMF Xe 5338, l 0.94mm, h 0.64mm. 2a–c. Cypridea maior Krömmelbein, 1965. Holotype, C, SMF Xe 5340, l 1.01mm, h 0.68mm. 3a–c. Cypridea subtilis Krömmelbein, 1965. Holotype, C, SMF Xe 5342, l 0.89mm, h 0.58mm. 4a–c. Cypridea suspecta Krömmelbein, 1965. Holotype, C, SMF Xe 5344, l 0.63mm, h 0.39mm. 5a–c. Cypridea (Morininoides) grekoffi Krömmelbein, 1965. Holotype, C, SMF Xe 5346, l 1.29mm, h 0.76mm. 6a–c. Reconcavona imitatrix Krömmelbein, 1965. Holotype, C, SMF Xe 5348, l 0.83mm, h 0.39mm. 7a–c. Candona? pitangaensis Krömmelbein, 1965. Holotype, C, SMF Xe 5350, l 0.94mm, h 0.58mm. 8a–c. Clinocypris? weileri Krömmelbein, 1965. Holotype, C, SMF Xe 5352, l 0.77mm. 9a–c. Tucanocypris camposi Krömmelbein, 1965. Holotype, C, SMF Xe 5354, l 0.94mm, h 0.50mm. 10a–c. Tucanocypris apiculata Krömmelbein, 1965. Holotype, C, SMF Xe 5358, l 0.90mm, h 0.46mm. 11a–c. Petrobrasia marfinensis (Krömmelbein, 1962). ‘Hypotype’, C, SMF Xe 5362, l 0.75mm, h 0.43mm, w 0.30mm. 12a–c. Petrobrasia signum Krömmelbein, 1965. Holotype, C, SMF Xe 5363, l 0.81mm, h 0.47mm.

FIGURE 8.

FIGURE 13. a = left lateral, b = dorsal, and c = right lateral views. 1a–c. Theriosynoecum isoplektum Krömmelbein & Weber, 1971. Holotype, C ♂?, BfB 7825, l 0.77mm, h 0.41mm, w 0.38mm. 2a–c. Theriosynoecum isoplektum Krömmelbein & Weber, 1971. Paratype, C ♀?, BfB 7826, l 0.72mm, h 0.38mm, w 0.37mm. 3a–c. Theriosynoecum ilhasensis Krömmelbein & Weber, 1971. Holotype, C, BfB 7827, l 0.90mm, h 0.51mm, w 0.51mm. 4a–c. Theriosynoecum trigonalis Krömmelbein & Weber, 1971. Holotype, C, BfB 7828, l 0.79mm, w 0.65mm. 5a–c. Theriosynoecum ventralatum Krömmelbein & Weber, 1971. Holotype, C ♀, BfB 7829, l 0.90mm, h 0.56mm, w 0.68mm. 6a–c. Theriosynoecum ventralatum Krömmelbein & Weber, 1971. Paratype, C ♂, BfB 7830, l 0.90mm, h 0.55mm, w 0.55mm. 7a–c. Theriosynoecum quadrinodosum Krömmelbein & Weber, 1971. Holotype, C ♀, BfB 7831, l 0.70mm, h 0.40mm, w 0.37mm. 8a–c. Theriosynoecum quadrinodosum Krömmelbein & Weber, 1971. Paratype, C ♂, BfB 7832, l 0.70mm, h 0.39mm, w 0.31mm. 9a–c. Theriosynoecum miritiensis Krömmelbein & Weber, 1971. Holotype, C ♀, BfB 7834, l 0.80mm. 10a–c. Theriosynoecum miritiensis Krömmelbein & Weber, 1971. Paratype, C ♂, BfB 7835, l 0.78mm, h 0.48mm, w 0.43mm. 11a–c. Theriosynoecum wicheri Krömmelbein & Weber, 1971. Holotype, C ♂, BfB 8022, l 0.76mm, h 0.42mm, w 0.36mm. 12a–c. Theriosynoecum wicheri Krömmelbein & Weber, 1971. Paratype, C ♀, BfB 8023, l 0.76mm, h 0.43mm, w 0.48mm.