Praepilatina praepilata ( Polenova, 1960 )

Maillet, Sebastien, Milhau, Bruno, Vreulx, Michel & Posada, Luis-Carlos Sánchez De, 2016, Givetian ostracods of the Candás Formation (Asturias, North-western Spain): taxonomy, stratigraphy, palaeoecology, relationship to global events and palaeogeographical implications, Zootaxa 4068 (1), pp. 1-78 : 49-50

Praepilatina praepilata ( Polenova, 1960)

(Pl. III: Fig. 17)

1960 Bairdiocypris praepilatus nov. sp.; Polenova: pl. 8, fig. 5.

? 1963 Krausella ? aff. mötzelbachi ( Blumenstengel, 1962); Le Fèvre: pl. 6, figs. 86–89.? 1964 Ostracode indet. G 5; Magne: 64, pl. 18, figs. 62–63.

? 1967 Pseudobythocypris cf. P. praepilatus ( Polenova, 1960) ; McGill: 1081, pl. 4, figs. 5–8.? 1968 Bairdiocypris ? cf. praepilata Polenova ; Zagora: 42–43, pl. 9, figs. 3–4.

? 1968 Bairdiocypris ? cf. praepilata Polenova ; Zagora & Zagora: tabl. 1.

1970 Praepilatina praepilata sibirica nov. ssp.; Polenova: 47, pl. 24, figs. 1, 3–5.

? 1971 Krausella ? aff. moetzelbachi Blumenstengel, 1962; Le Fèvre: 822, 825, 829, pl. 3b. 1977 Praepilatina praepilata sibirica (Polenova) ; Becker & Sánchez de Posada: 172–173, pl. 10, figs. 1–4, pl. 11, figs. 1–3. 1979 Praepilatina praepilata sibirica (Polenova) ; Feist &Groos-Uffenorde: 120, pl. 10, figs. 76–77.? 1982 Praepilatina ? cf. ostr. indet. G5 Magne; Milhau: 21, pl. 4, figs. 94–95.

1985 Praepilatina praepilata sibirica (Polenova) ; Lethiers et al.: 71, 73, pl. 11, fig. 9.

? 1996 Praepilatina nov. sp. A, aff. praepilata sibirica (Polenova) ; Casier in Casier & Préat: 373, pl. 4, figs. 6–7. 2000 Praepilatina sp., gr. P. praepilata sibirica (Polenova) ; Becker: 126, pl. 7, figs. 7–8.

? 2001a Praepilatina sp., gr. P. praepilata (Polenova) ; Becker: 79–80, pl. 7, fig. 16, pl. 11, figs. 1–3, pl. 15, fig. 8.? 2004 Praepilatina sp., Gr. P. praepilata (Polenova) ; Becker et al.: 67–68, pl. 11, figs. 10–11. 2013 Praepilatina praepilata (Polenova) ; Maillet: 153, pl. XXIII, figs. 12–16.

2013a Praepilatina sp. A; Maillet et al.: pl. 1, fig. 33.

Material. 5 specimens (5 C).

Diagnosis. Polenova (1970), p. 47–48.

Description. Small carapace, flattened in dorsal view, well-rounded sub-triangular outline in lateral view. Carapace almost as high as long. Slight overlap of the larger LV over the RV along whole outline. Hmax slightly posterior; Lmax at 1/3 ventral; Wmax slightly postero-ventral. Dorsal margin regularly convex in its posterior part, oblique anteriorly in its anterior part. Ventral margin straight and horizontal in its middle, more convex at its extremities. Posterior margin straight and vertical in its middle, more convex at its extremities. Anterior margin regularly convex, very arched. Posterior part of the carapace clearly higher than the anterior one. Surface smooth.

Discussion. A widely distributed species through Early and Middle Devonian in Europe. Our specimens more likely belong to the Praepilatina praepilata sibirica ( Polenova, 1960) subspecies. Becker & Sánchez de Posada (1977) and Becker et al. (2004) reported intraspecific variability with a possible postero-ventral spine, not observed in our specimens.

Occurrences. Lower to Middle Givetian (Hanonet, Trois-Fontaines, Terres d’Haurs, Mont d’Haurs and Névremont Fms), Ardenne (Flohimont, Mont d’Haurs and Aisemont sections), Lower Devonian to Middle Givetian (Aguion Fm, Moniello Fm and Candás Fm, mbs A, B and C), Asturias; Eifelian to Middle/Upper Givetian, Mouthoumet Massif (Albières and Berco Petito sections), Eifelian/Givetian boundary (Chefar el Ahmar Fm), Saoura (Km 30 section); Middle Devonian, Russia; Lower Devonian, Montagne Noire.