The Echinoid Directory

Contributed by Andrew Smith, April 2011

Murraypneustes Holmes, Yee & Krause, 2005, p.

Diagnostic Features
  • Large, ovoid test with centrally depressed apical surface
  • Apical disc ethmolytic with 4 gonopores
  • Anterior ambulacrum narrow, weakly depressed; forming a slight sulcus at the ambitus.  Pore-pairs small and undifferentiated on apical surface
  • Paired ambulacra petaloid aborally, the two columns bowed and almost closed distally.  Petals hardly depressed.
  • Labral plate elongate and narrow; extending to third ambulacral plate; naked. Sternal plates symmetrical; indented at posterior by ambulacral zones; fully tuberculate
  • Peristome D-shaped, facing downwards
  • Periproct large on short posterior face
  • Aboral tuberculation of two sizes, the larger tubercles better developed towards the ambitus
  • Peripetalous fasciole present, as multiple bands in places; hexagonal subanal fasciole present.
Distribution Early Middle Miocene, South Australia
Name gender feminine
Type Murraypneustes biannulatus Holmes, Yee & Kruse 2005, p. 93 by original designation.

Holotype: National Museum of Victoria NMV P312370
Species Included Only the type species
Classification and/or Status Spatangoida, Micrasterina, Maretiidae

Monotypic.
Remarks Fully described by Holmes et al. (2005) who discuss its possible taxonomic placement.

Holmes, F. C., Yee, C. A. & Krause, J. 2005. Two new Middle Miocene spatangoids (Echinoidea) from the Murray Basin, South Australia. Memoirs of Museum Victoria 62(1), 91-99.