The Echinoid Directory

Contributed by Andrew Smith, September 2011

Titanaster Szorenyi, in Mortensen, 1950, p. 84

Diagnostic Features
  • Ovate with faint anterior sulcus
  • Apical disc subcentral; holasterid in structure
  • All five ambulacra subpetaloid aborally, petals extending towards the ambitus
  • Oral surface unknown
  • Aboral tubercles fine and sparse.
Distribution Eocene of Hungary
Name gender masculine
Type Titanaster labiostoma Szorenyi, 1929, by original definition.
Species Included Only the type species.
Classification and/or Status Irregularia, Atelostomata, Holasteroida

Remarks The original description of this genus is in the dissertation of E. Szorenyi, which does not count as a valid publication.  Mortensen (1950, p. 84) in publishing the name and illustration validated the genus.  Without knowledge of the oral plating it is impossible to place this genus beyond Holasteroida.

Mortensen, T. 1950. A monograph of the Echinoidea. V.1. Spatangoida 1. C. A. Reitzel, Copenhagen.