The Echinoid Directory

Printechinus Koehler, 1927, p. 97

Diagnostic Features
  • Test small, semiglobular with flattened lower surface.
  • Apical disc dicyclic. Gonopores marginal; ring of tubercles on inner part of genital plates surrounding periproct. Periproct subcircular; small suranal plate distinct.
  • Ambulacra about half interambulacral width. Plating trigeminate, plate compounding in echinid style. Pore-pairs more or less uniserial throughout, not expanded adorally. Each compound plate with a primary tubercle, close to the pore zone. Perradial zone more or less naked.
  • Interambulacral plates relatively tall with small central primary tubercle. A few scattered miliries and granules surround the primary, but the interradial zone is more or less naked adapically.
  • Primary tubercles imperforate and distinctly crenulate.
  • Small sutural pits at all triple junctions and along horizontal sutures, largest immediately beneath the primary tubercles.
  • Peristome small, flush with shallow buccal notches. peristomial membrane naked except for buccal plates.
  • Spines short and simple.
  • Lantern camarodont.
Pliocene to Recent, Indo-West Pacific.
Name gender masculine
Printechinus impressus Koehler, 1927, p. 97, by monotypy.
Species Included
  • P. impressus Koehler, 1927; Recent, Andaman Sea
  • P. javanus Lambert & Jeannet, 1935; Pliocene, Java.
  • P. viridis Mortensen, 1942; Recent, Sumatra.
Classification and/or Status

Euechinoidea; Camarodonta; Temnopleuroida; Temnopleuridae.

Treated as a subgenus of Microcyphus.


Distinguished from Microcyphus by the absence of biserial pore zones and the presnece of a distinct primary tubercle. Printechinus differs from Salmacopsis in having vertically elongate sutural pits.

Mortensen, T. 1943. A monograph of the Echinoidea Part III.2, Camarodonta 1. C. A. Reitzel, Copenhagen.