What is "kachpurites"

Kachpurites is an uppermost Jurassic (Tithonian) ammonite included in the perisphincacean family, Craspeditidae; although some classifiers put the Craspeditidae a subfamily in the Polyptychitidae. The shell of Kachpurites is subinvolute with a rounded section and bears low, close spaced, moderately sinuous ribs.

Kachpurites is characteristic of the lower part of the upper Volgan substage in the Russian Platform.