The Echinoid Directory

Novasalenia Zitt & Geys, 2003, p. 24

Diagnostic Features
  • Apical disc flat and raised above the corona; margins of disc ragged; sutures not incised in type species, but pitted and tuberculate in second species.
  • Suranal plate as large as the genital plates and larger than periproct.
  • Periproct displaced laterally from the anterior-posterior axis towards ocular plate I.
  • Small tubercles on sunken rim surrounding the periproct.
  • Ambulacral plating trigeminate adorally and mostly bigeminate at ambitus and aborally. Primary tubercles small, uniform and imperforate at ambitus and aborally; perforate and crenulate orally.
  • Pore zones expanded to form phyllodes adorally.
  • Interambulacral tubercles crenulate; ambital and adoral plates with single large tubercle; adapical plates lacking a primary tubercle and covered in dense, uniform, secondary tubercles. Adoral tubercles perforate, ambital tubercles with rudimentary perforation.
  • Peristome relatively large (>60% test diameter) with deep, well developed and rimmed buccal notches.
Distribution
Upper Cretaceous (Cenomanian), Czech Republic.
Name gender feminine
Type
Novasalenia predbojensis Zitt & Geys, 2003, p. 25, by monotypy. Holotype: National Museum, Prague O 6312.
Species Included
Classification and/or Status

Carinacea, Calycina, Salenioida; stem group Saleniidae.

Presumed monophyletic.

Remarks

Differs from Heterosalenia in having polyporous adoral ambulacral plating, slightly more rudimentary perforation of interambulacral tubercles and adapical interambulacral plates that lack a primary tubercle. Distinguished from Polysalenia by its strictly bigeminate ambital and aboral ambulacral plating. The flat, unornamented apical disc of the type species is somewhat different from that of Polysalenia or Heterosalenia, but the other taxon included here by Zitt & Geys (2003) has a much more standard disc appearance.

Zitt, J. & Geys, J. F. 2003. Novasalenia gen. nov.: a remarkable Late Cenomanian echinoid from the Bohemian Cretaceous Basin (Czech Republic). Cretaceous Research 24, 23-30.