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Mogulia bifrons
Taxonomy
Stachella bifrons was named by Waagen (1880).
It was recombined as Mogulia bifrons by Wagner (2023).
It was recombined as Mogulia bifrons by Wagner (2023).
Synonymy list
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Mogulia bifrons Waagen 1880
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. H. Waagen 1880 | The general form of the shell is globose with very strongly inflated whorl which leave no umbilicus open on the basal side of the shell, and but a very sma one on the apical side. The basal side is slightly impressed on the umbilical regioi The whorls are well rounded everywhere, and also the umbilicus is not surrounde by any distinct edge, but the curve is not an equal one. The laterally most pr< minent part of the whorls lies high up on the basal side of the shell, whilst it immediately above the umbilicus on the apical side.
The surface of the shell is very badly preserved in all the specimens at my dii posal, and in none of them can either striae of growth or a slit-band on the peripher; part be observed. The shell is not very thick, and even in the umbilical region it is not strongl thickened. The aperture is unsymmetrically semilunar, angular on the basal and narrowl rounded on the apical side. The outer lip seems to have been thin and sharp, th emargination in the middle of it is not preserved in any of the specimens. It starl from the impression on the umbilical region of the basal part of the shell in hyperbolical curve towards the front, is thickened and somewhat callous, but cannc be traced in its further outline. The inner lip is but little callous, and contribut( but little to the thickening of the peripheral part of the inner whorl. It unites wit the outer lip on the basal part of the shell in an obtuse angle and on the apicz part in a narrow curve, thickening by a slight callosity the low wall which sui rounds the small but deep umbilicus. |