Granulolabium Cossmann, 1889

Thivaiou, Danae, Harzhauser, Mathias & Koskeridou, Efterpi, 2019, Early Miocene Gastropods from the Felli Section (Proto-Mediterranean Sea NW Greece), Geodiversitas 41 (8), pp. 323-366 : 331-332

Genus Granulolabium Cossmann, 1889

TYPE SPECIES. — Cerithium plicatum Bruguière, 1792 ; by original designation. Early Miocene, France.

Granulolabium plicatum ( Bruguière, 1792) (Fig. 4 B1-B3)

Cerithium plicatum Bruguière, 1792: 488 . — Hörnes 1856: 400, pl. 42, fig. 6.

Granulolabium plicatum – Sacco 1895a , div. var.: 58, pl. 3, fig. 45. — Lozouet 1986: 171, fig. 2 a-d; 2001: 28, pl. 8., figs 1a-b, 2a-c, 3a c. — Harzhauser & Kowalke 2001: 27, pl. 8, figs 1-3. — Harzhauser 2002: 73, pl. 1, fig. 17-20; 2004: 120, pl. 5, figs 1-4. — İslamoğlu 2008: 266, fig. 6-P. — Esu & Girotti 2010: 159, pl. 5, figs 10-13. — Moths et al. 2010: 32, pl.10, fig. 6, pl. 34, fig. 8. — Lozouet & Maestrati 2012: 278, figs 180/4-6. — Cluzaud et al. 2014: 226, fig. 171I. — Kovács & Vicián 2016: 247, pl. 1, fig. 5.

Cerithium (Granulolabium) plicatum – Schaffer 1912 , div. var.: 151, pl. 51, fig. 36-40.

Pirenella plicata – Cossmann & Peyrot 1921: 267, pl. 5, fig. 99-101, pl. 6, fig. 42-44. — Báldi 1973: 259, pl. 29, fig. 3.

MATERIAL EXAMINED. — Sample F1: AMPG ( IV) 2072-2088 (17 specimens); sample F2: 2089-2138 (50 specimens); sample F3: AMPG ( IV) 2139-2166 (28 specimens) ; sample F7: AMPG ( IV) 2167-2226 (60 specimens) ; sampleF8: AMPG ( IV) 2227-2236 (ten specimens) ; sample F10: AMPG ( IV) 2237-2238 (two specimens) .

DIMENSIONS. — Maximum height: 35.0 mm.

DISTRIBUTION. — Oligocene. NE Atlantic, Paratethys, North Sea Basin ( Harzhauser 2004); Western Tethys-Proto-Mediterranean Sea: Greece, Turkey ( Harzhauser 2004; İslamoğlu 2008).

Early Miocene. NE Atlantic ( Lozouet et al. 2001); Proto-Mediterranean Sea: Greece, Turkey ( Harzhauser 2004); Paratethys ( Schaffer 1912; Mandic et al. 2004); North Sea Basin (Harzhauser 2002; Harzhauser 2004; Büyükmeriç 2017).

REMARKS

Granulolabium plicatum has been discussed in depth and compared to similar species by Lozouet (1986) in an effort to clarify the differences between various potamidid and batillariid species. In Lozouet et al. (2001), an extensive list of the French literature is presented with the many different names attributed to G. plicatum , thus noting the confusion of the authors due to the morphological variability of the species.

The specimens from Felli show some residual colouration patterns that consists of darker and lighter spiral lines that coincide with the ornamentation (the spiral threads are darker and give a brighter colour under UV light).

Granulolabium species are able to withstand variations in salinity and they are known to characterize lagoonal or littoral environments ( Latal et al. 2006; Esu & Girotti 2010). In the Paratethys (Korneuburg Basin, Austria) the Granulolabium - Agapilia biofacies represents slightly energetic conditions of an outer tidal flat ( Zuschin et al. 2014).

Figures

FIG. 4. — A1-A3, Bittium larrieyense Vignal, 1911: A1, AMPG(IV) 1891 (SEM image); A2, A3, AMPG(IV) 1646; B1-B3, Granulolabium plicatum (Bruguière, 1792): B1, AMPG(IV) 2089 (SEM image); B2, B3, AMPG(IV) 2167; C1-C3, Gibborissoia varicosa (de Basterot, 1825): C1, AMPG(IV) 2239 (SEM image); C2, C3, AMPG(IV) 2240; D, Mesohalina margaritacea (Brocchi, 1814), AMPG(IV) 2294 (SEM image); E1-E3, Terebralia lignitarum (Eichwald, 1830), AMPG(IV) 2304; F1-F3, Terebralia subcorrugata d’Orbigny, 1852, AMPG(IV) 2306; G1-G4, Finella perpusilla (Grateloup, 1827): G1, G2, AMPG(IV) 2308; G3, AMPG(IV) 2309 (SEM image); G4, AMPG(IV) 2309, protoconch (SEM image); H1-H4, Turritella turris de Basterot,1825:H1, H2, AMPG(IV) 2404;H3, AMPG(IV) 2405 (SEM image); H4, AMPG(IV) 2405, protoconch (SEM image). Scale bars: A1, C2, C3, G1, G2, H1-H3, 500 µm; A2, A3, D, 1 mm; B1, G3, C1, 400 µm; B2, B3, 5 mm; E1-E3, 10 mm; F1-F3, 2 mm; G4, H4, 200 µm.