Teretia, Norman, 1888

Scarponi, Daniele, Bella, Giano Della, Dell’Angelo, Bruno, Huntley, John Warren & Sosso, Maurizio, 2016, Middle Miocene conoidean gastropods from western Ukraine (Paratethys): Integrative taxonomy, palaeoclimatogical and palaeobiogeographical implications, Acta Palaeontologica Polonica 61 (2), pp. 327-344 : 340

Teretia cf. T. turritelloides ( Bellardi, 1847)

Figs. 7E , 8G, H , SOM 1: fig. 3J, SOM 2.

Material.— Five specimens from Varovtsi Pidhirtsi Beds, early Serravallian; MGGC-24524 /1–5, three in good conditions (SOM 2) .

Remarks. — This morphotype resembles Teretia fusianceps Nordsieck, 1972 , however, the carinated spiral whorls along with a shorter protoconch allow for an immediate separation from T. fusianceps (see Janssen and Wienrich 2007). Our specimens fully correspond to the description and iconography of T. turritelloides type material as reported in Bellardi (1847), Ferrero Mortara et al. (1981) and Brunetti and Vecchi (2003). Unfortunately no complete protoconch was available from the type material that ranges in age from the Serravallian to Pliocene ( Ferrero Mortara et al. 1981). As the protoconch characters are of fundamental importance in the identification of the majority of the conoideans, we herein recommend the conservative Teretia cf. T. turritelloides usage pending future revision of protoconch characters on new material from the type area.

Figures

Fig. 7. SEM images of protoconch features of conoidean gastropods from early Serravallian of western Ukraine, Varovtsi (A, C–F) and Horodok (B). A. Bela? robusta sp. nov., MGGC-24519/8. B. Pyrgocythara turrispiralata sp. nov., MGGC-24515/11. C. Raphitoma cf. R. ringicula (Boettger, 1902), MGGC-24522/5. D. Andonia sp. aff. A. transsylvanica (Hoernes and Auinger, 1890), MGGC 24523/2. E. Teretia cf. T. turritelloides Bellardi, 1847), MGGC-24524/5. F. Haedropleura sp. aff. H. septangularis (Montagu, 1803), MGGC-24520/6. Views: A1, B1, C–F, lateral; A2, B2, apical. Scale bars 0.1 mm.

Fig. 8. SEM images of shell features of conoidean gastropods from early Serravallian of western Ukraine, Horodok (A, B) and Varovtsi (C–J). A, B. Pyrgocythara turrispiralata sp. nov. A. MGGC-24515/11. B. MGGC-24515/9. C, D. Raphitoma cf. R. ringicula (Boettger, 1902). C. MGGC-24522/1. D. MGGC-24522/3. E, F. Andonia sp. aff. A. transsilvanica (Hoernes and Auinger, 1890). E. MGGC-24523/1. F. MGGC-24523/3. G, H. Teretia cf. T. turritelloides (Bellardi, 1847).G. MGGC-24524/3. H. MGGC-24524/5. I, J. Haedropleura sp. aff. H. septangularis (Montagu, 1803). I. MGGC-24520/6. J. MGGC-24520/11. Views: A1, C1, E1, G1, I1, apertural; B, D, E2, H, I2, dorsal; A2, C2, F, G2, J, lateral. Scale bars 1 mm.