Retusa melitopolitana (Sokolov, 1899)
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publication ID |
https://doi.org/ 10.26879/936 |
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persistent identifier |
https://treatment.plazi.org/id/03B287EF-FFF0-3201-D845-FE38466D85CE |
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treatment provided by |
Felipe |
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scientific name |
Retusa melitopolitana (Sokolov, 1899) |
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Retusa melitopolitana (Sokolov, 1899)
Figure 4.3 View FIGURE 4
1899 Cylichnina melitopolitana Sokolov , p. 42, pl. 4, figs. 48-52.
1935 Bulla melitopolitana (Sokolov) ; Kolesnikov, p. 292-293, fig. 39, pl. 33, figs. 21-24.
2012 Retusa melitopolitana (Sokolov) ; O. Anistratenko and V. Anistratenko, p. 123.
Material. 77 specimens from layer 1 and 1 specimen from layer 3.
Description. Oval-cylindrical shell, spire is immersed inside the last whorl, forming a funnellike depression (HS is up to 6 mm; WS is up to 3 mm), WS/HS is 0.45 in average, consists of 3.5 overlapping whorls separated by a deep suture. The last whorl is rounded and makes up the entire height of the shell. Aperture is slit-shaped, widens to the bottom part and becomes rounded, its upper edge protrudes above the surface of the shell, and aperture height is equal to the last whorl and shell height. The aperture outer edge is thin; the inner edge is tightly attached to the shell, forming a well-marked thickening. The surface of the shell is smooth; growth lines are visible.
Remarks. Samples from layer 3 are preserved as internal casts.
Region of distribution and age. Early and Middle Sarmatian (Volhynian-Bessarabian) of the Eastern Paratethys (O. Anistratenko and V. Anistratenko, 2012).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.