The Echinoid Directory

Platysalenia Smith & Wright, 1990, p. 167

Diagnostic Features	Apical disc flat and unornamented with large, square-ended ocular plates that project strongly. Large pits at mid-length along genital-genital and genital-ocular plate sutures. Ambulacra straight and with exceptionally broad and somewhat concave perradial zone of fine granules (forming >80% of ambulacral width). Ambulacral plating bigeminate throughout. Primary tubercles on interambulacral plates without scrobicular tubercles on adambulacral side. Tubercles imperforate and crenulate.
Distribution	Cretaceous, (Late Albian), England.
Name gender	feminine
Type	Salenia dux Wright, 1967, by original designation.
Species Included	Only the type species.
Classification and/or Status	Salenioida; Saleniidae; Saleniinae Monotypic: subgenus of Salenidia Pomel, 1883
Remarks	Close to Salenidia in apical disc structure, but with wide and finely granular perradial zones. Smith, A. B. & Wright, C. W. 1990. British Cretaceous Echinoids. Part 2, Echinothurioida, Diadematoida and Stirodonta (1, Calycina). Monograph of the Palaeontographical Society 101-198, pls 33-72 (publication number 583, part of volume 143 for 1989).