The Echinoid Directory

Hemifaorina Jeannet & Martin, 1937, p. 289

Diagnostic Features
  • Test ovate with faint anterior sulcus; subglobular in profile.
  • Apical disc unknown.
  • Ambulacrum III in well-developed anterior sulcus aborally; pore-pairs suggest funnel-building tube-feet were present.
  • Anterior petals flexed forwards; sunken and bowed; closing distally. Posterior petals short and less flexed; also sunken.
  • The vertical ambulacral sutures are naked below the petals.
  • Peripetalous fasciole deeply indented behind anterior petals. Latero-anal fasciole present but incomplete, seen only towards the rear.
Distribution Upper Miocene, Timor.
Name gender feminine
Hemiaster tuber Herklots, 1854, p. 15, by orginal designation.
Species Included Only the type specimen.
Classification and/or Status

Spatangoida, Paleopneustina, Schizasteridae.

Monotypic; nomen dubium.


Jeannet & Martin (1937) never properly diagnosed this genus or established how it was to be distinguished. It resembles Faorina in having naked perradial bands beneath the four petals, and has only an incomplete latero-anal fasciole. It is based on a poorly preserved individual and may be a junior synonym of Hypselaster.

Jeannet, A. & Martin, R. 1937. Ueber Neozoische Echinoidea aus dem Niederlandisch-Indischen Archipel. Leidsche Geologische Mededeelingen 8, 169-351.