Triadogigantocypris donzei ( Neale 1976 )

Kornicker, Louis S., Van, Barry W. M., Bakel, Fraaije, René H. B. & Jagt, John W. M., 2006, Revision of Mesozoic Myodocopina (Ostracoda) and a new genus and species, Mesoleberis hollandica, from the Upper Cretaceous of Belgium and The Netherlands, Zootaxa 1246, pp. 15-54 : 32

Triadogigantocypris donzei ( Neale 1976)

Fig. 3 C–E

Cypridina ? n. sp. A Donze 1965:100, 101, pl. 3: figs. 71–74.

Pseudophilomedes sp. Grékoff & Magné 1966:179, pl. 1: figs. 6a–f.

Cypridina, Donze 1971:651 –661 (pers. comm. Donze (5/8/2006) through Jean­Paul Colin). Philomedes donzei Neale 1976:9 –12, text­figs. 1–3.

Triadogigantocypris donzei ( Neale 1976) .— Kornicker & Sohn 2000:28.

Holotype

University of Hull, collection number HU.152.C.1, carapace. Type Locality. Chabrières, Alpes­Haute­Province, France: approx. lat. 44°02’N, 6° 16’E. From the basal Valanginian (Vocontian Trough).

Material

Specimens not examined herein.

Diagnosis

Carapace oval in lateral view; female carapace more rounded than that of male. Posterior margin of female with slight projection at midheight; posterior margin of male with acuminate posterior. Carapace with rostrum; ventral margin of rostrum forms obtuse angle with anterior edge of valve ventral to rostrum. Muscle scars consisting of main cluster of 4 oblique scars with 1 scar longer than others, anteroventral to fan of 5 scars, and anterior to 2 short scars. Length of holotype 1.117 mm.

Comparisons

Carapace differs from that of M. hollandica in having a different arrangement of central adductor muscle scars, and in having a posterior taper at midheight.

Figures

FIGURE 3. Triadogigantocypris balatonica Monostori 1991: A, left lateral view of carapace, length 12 mm; B, detail of central muscle scars from A. Triadogigantocypris donzei (Neale 1976): C, lateral view of male carapace, length 1.065 mm; D, lateral view of female carapace, length 1.117 mm; E, central adductor muscle scars, left valve. Triadogigantocypris koninckiana (Bosquet 1847): F, G, I, lateral views of 3 right valves; H, lateral view, left valve. Triadogigantocypris ovulata (Bosquet 1847): J, left lateral view of carapace, length 1.4 mm. Triadogigantocypris limburgensis (Van Veen 1936): K, lateral view, right valve. Triadocypris spitzbergensis Weitschat 1983 a: L, lateral view of carapace, length 3.1 mm; M, central adductor muscle scars left valve. Size of specimens given if stated in original description.