The Echinoid Directory

Lissospatangus Mortensen, 1950, p. 162

Diagnostic Features
  • Test ovate without anterior sulcus; depressed in profile with moderately sharp ambitus.
  • Apical disc ethmolytic with four gonopores; central. Gonopores on inner half of genital plates.
  • Anterior ambulacrum narrow and flush aborally; pore-pairs small and undifferentiated.
  • Paired ambulacra petaloid. Petals weakly bowed; adapical portion of anterior column of pore-pairs rudimentary in anterior petals. Petals closed distally; no occluded plates.
  • Peristome D-shaped and downward-facing.
  • Labral plate elongate - extended to rear of second ambulacral plate. Episternal plates paired and forming rear part of plastron; strongly contracted posteriorly.
  • Periproct on posterior vertically truncate face.
  • Subanal fasciole present; shield-shaped.
  • Peripetalous fasciole present; narrow; not indented behind anterior petals; bounding outer end of petals.
  • Aboral tuberculation rather fine and uniform - no primary tubercles.
Distribution
Recent, Australia.
Name gender masculine
Type
Lissospatangus hirsutus Mortensen, 1950, p. 162, by orginal designation.
Species Included
  • Mortensen included one other species in addition to the type species, L. dyscritus (Clark, 1938).
Classification and/or Status

Spatangoida, Micrasterina, Maretiidae.

Subjective junior synonym of Granobrissoides Lambert, 1920.

Remarks

Described in Mortensen (1951). McNamara et al. (1986) treat the modern Lissospatangus as a subjective synonym of Granobrissoides.

Mortensen, T. 1951. A Monograph of the Echinoidea V, 2 Spatangoida 2, Amphisternata. II. Spatangidae, Loveniidae, Pericosmidae, Schizasteridae, Brissidae. C. A. Reitzel, Copenhagen.

McNamara, K. J., Philip, G. M. & Kruse, P. D. 1986. Tertiary brissid echinoids of southern Australia. Alcheringa 10, 55-84.