The Echinoid Directory

Contributed by Andrew Smith, August 2011

Paratrema Koehler, 1927, p. 90

Diagnostic Features Like Temnotrema in having only 5 buccal plates and correspondingly 5 buccal tube-feet, and in the periproct being covered with quite small plates, without a suranal plate; anal opening central.  Globiferous pedicellariae with a long unpaired lateral tooth.
Distribution Recent, Indo-Pacific (10-20 m water depth)
Type Pleurechinus doederleini Mortensen, 1904, p. 90, by original designation
Species Included Only the type species
Classification and/or Status Camarodonta, Temnopleuroida, Temnopleuridae

Remarks Differs from Temnotrema only in the fine structure of its pedicellariae.  Probably not worth distinguishing.

Koehler, R. 1927. An account of the Echinoidea: Echinodermata of the Indian Museum. Part X, Echinoidea (3). Echinides reguliers. 158 pp., 27 pls.

Mortensen, T. 1904. The Danish Expedition to Siam 1899-1900. III. Echinoidea (1). Kongelige Danske Videnskabelige Selskabs, Skrifter, Serie 7, 1, 1-124.

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