Vaccinites gosaviensis Douvillé, 1890

Săsăran, Liana, Săsăran, Emanoil & Bucur, Ioan I., 2018, Upper Cretaceous Rudist-Bearing Mixed Siliciclastic-Carbonate And - Volcanoclastic Deposits From Strâmturii Valley, Borod Basin, Northern Apuseni Mountains: Description, Microfacies And Depositional Environments, Acta Palaeontologica Romaniae 14 (1), pp. 3-20 : 14-15

Vaccinites gosaviensis Douvillé, 1890

Fig. 8h, i .

1891 Hippurites gosaviensis n. sp. - Douvillé, p. 24, text-figs.9, 12-14

1904 Vaccinites gosaviensis Douvillé- Toucas, p. 92, pl.13, fig.3, text-fig.146

1966 Hippurites (Vaccinites) gosaviensis Douvillé - Todiriță- Mihăilescu, p. 72, pl.17, fig.2, pls.18-20.

1960 Hippurites (Vaccinites) gosaviensis Douvillé- Lupu and Lupu, pp. 635-636, pl. 1, figs. 28-29, text-figs.3-4.

1969 Hippurites (Vaccinites) gosaviensis Douvillé- Polšak & Mamuzic, pp. 235, 239.

1976 Vaccinites gosaviensis Douvillé- Lupu, p. 110, pl.2, figs.1a-c,2, pl.35, figs.5,6.

2001 Vaccinites gosaviensis (Douvillé) - Steuber, pp. 438, 441, tab.1.

Material: 1 specimen with both valves (no. 24089- BBU-MPS), one right valve (no. 23503- BBU-MPS) .

Description: The upper valve (LV) is very thin, slight convex but do not preserve any significant morphological characters due to erosion. The right valve (RV) has a conical shape, gently curved, 100 mm in length and a diameter of 47/ 60 mm at 5 mm below to the commissural plane. The outer shell layer of the right valve is thin, 2 to 4 mm in thickness, partly eroded ( Fig. 8 h-i). In the transversal section trough the RV, the ligamental ridge (L) appears straight, 8 mm in length, with its inner termination truncated ( Fig. 8i ). The first pillar (P1) is very pinched at the base and have a rounded-elliptic head, 9 mm total length; the second pillar (P2) is more pedunculated having 12

mm in length and an oval head which is curved towards to ligamental ridge ( Fig. 8i ). The elements of the myocardinal apparatus are also visible: anterior tooth (at) in prolongation of L, posterior tooth (pt) located parallel and not surpassing the tip of ligamental ridge; posterior myophore (pm) rectangular outline, aligned sub-parallel to the first pillar (P1) and projecting interiorly 5 mm over the tip of P1 ( Fig. 8i ).

Discussion and remarks: From the area of Valea Neagră de Criş, southeastern part of Borod Basin, Lupu & Lupu (1960), Lupu,(1976) described sub-species Vaccinites gosaviensis acicularis ( Lupu & Lupu, 1960) that differs from Vaccinites gosaviensis by its ligamental ridges with sharp inner termination curved anteriorly and more wide and rounded furrows on the shell ornamentations.

Age and distribution: Santonian-early Campanian in Austria ( Steuber, 2001), Croatia ( Polšak and Mamuzic, 1969), Greece (Kollman et al., 1985), Italy ( Sirna, 1990), and Romania (Todiriță- Mihăilescu, 1966; Lupu, 1976); early Maastrichtian in Turkey ( Fenerci, 1999).

Figures

Fig. 8 a-g Hippuritella lapeirousei (Goldfuss)(nos. 24085, 24086, 24087, 24088-BBU-MPS). a Transverse section made close to the beak of right valve (RV), the outer shell layer is thick, reaching 3 mm. b RV showing the position of the pillars (P1 and P2) as shallow longitudinal furrows (24085 BBU-MPS). c thin and nearly flat LV very eroded showing remains of radial canals (24085 BBU-MPS). d ventral area of conical, slightly curved RV (24086 BBU- MPS) showing the position of the pillars as two shallow longitudinal furrows; e transverse section of RV showing short and rounded pillars (P1 and P2) with the same size (24086 BBU-MPS). f, g transverse sections through specimens (nos. 24087, 24088 BBU-MPS) that have the first pillar (P1) slightly smaller than the second pillar (P2). Note the erosion of the outer shell layer in f) (24087 BBU-MPS). h-i Vaccinites gosaviensis (Douvillé)- transverse section made on two RVs (nos. 23503, 24089 BBU-MPS) showing truncated ligamental ridge (L) and characteristic shape of the pillars. j Vaccinites archiaci (Douvillé), transverse section on RV (no. 24090 BBU-MPS) showing triangular in base and lamelliform ligamental ridge (L), first pillar (P1) thick and shorter and slightly pinched P2. k Vaccinites sulcatus (Defrance) – transverse section on lower valve (no. 23504 BBU-MPS) in which ligamental ridge (L) is wide and short having the same length with first pillar (P1) and second pillar is slightly pinched at its base and curved anteriorly.