Mathilda Semper, 1865

Szabó, János & Jaitly, Anand Kumar, 2019, Additional Middle Jurassic gastropods from Kachchh (western India) in the collections of the Banaras Hindu University (Varanasi, India), Fragmenta Palaeontologica Hungarica 36, pp. 3-30 : 28

Genus? Mathilda Semper, 1865

Type species – Turbo quadricarinatus Brocchi, 1814

Mathilda ? sp.

( Fig. 79)

Material – Single, fragmentary specimen.

Measurements – Inv. No.: BHU 2020I 311; H dam. = 3.5 mm, D = 1.8 mm.

Description – Minute, turriculate shell without apical and latest shell parts. The shape of the preserved whorls is quite characteristic; they have a wide, slightly convex subsutural ramp, abaxially limited by a nearly mid-whorl angulation; the remaining part of the whorls actually also form ramp that slopes adaxially towards the lower suture.

The angulation between the ramps bears a carina, further double spiral threads are above and below it; no more ornament, neither growth lines are preserved.

Remarks – The shell is characteristic enough to place it in Mathildidae but poorly preserved for accurate identification.

Occurrence – Fakirwari, Chari Formation, Callovian.