Petitclercia
Petitclercia is a genus of molluscs from the strigoceratid subfamily Disticocratinae which are included in the ammonitid superfamily Haplocerataceae. Petitclercia, named by Rollier, 1909.
The shell of Petitclercia is involute, very compressed, with a sharp umbilical angle and sharp fastigate venter. Spath speculated that Petitclercia is perhaps "an involute development of Chanasia", another of the Distichoceratinae.