Xestopyrguloides? sp.
publication ID |
https://dx.doi.org/10.3897/zitteliana.97.115682 |
publication LSID |
lsid:zoobank.org:pub:933EC356-F21C-45AF-9CFA-563E64D27953 |
persistent identifier |
https://treatment.plazi.org/id/BC509662-A6F7-54D8-9F28-F36CDE5CBC7D |
treatment provided by |
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scientific name |
Xestopyrguloides? sp. |
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Xestopyrguloides? sp. View in CoL
Fig. 10S-U View Figure 10
Material.
1 fragment (RGM 1365347) from sample 2.
Remarks.
A second species is tentatively referred to the genus Xestopyrguloides . A single incomplete shell is available, containing the last 2.5 whorls and the upper part of the aperture. The shell is similarly elongate as Xestopyrguloides? sagitta sp. nov. and also bears a narrow basal keel, as well as the same type of growth lines. However, the shell is larger, the whorls are moderately convex, and the aperture is larger and drop-shaped. The basal keel and shape of the aperture, as well as the size, would also fit to the Greek X. neumayri and Xestopyrguloides? heldreichii (Fig. 10R View Figure 10 ), but both species have straight-sided whorls.
The Staja - Falsipyrgula species complex
Remarks. The enormous morphological variability of the Denizli specimens, as well as other material from Turkey and Greece assigned to the genus Staja (e.g., Willmann 1982), makes a systematic classification incredibly difficult. This concerns variation in shell shape, size, and presence and expression of sculpture, which - if our assessment is correct - varies even within single species. The keeled representatives remind of and are considered to belong in the Pyrgulinae genus Falsipyrgula , while the smooth morphotypes are classically assigned to Staja , a genus that is originally described from the Late Miocene of the Pannonian Basin.
A full revision of the Greek-Turkish Staja - Falsipyrgula species complex is beyond the scope of this study. We follow the literature for the genus classifications of the known species, yet being aware of the unresolved genus concepts. A new species is placed in Falsipyrgula due to the close similarities to extant congeners.
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.
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SuperFamily |
Neritoidea |
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SubFamily |
Hydrobiinae |