The Echinoid Directory

Contributed by Andrew Smith, September 2006

Recrosalenia Currie, 1925, p. 47

Diagnostic Features	Apical disc not preserved, but opening large and possibly pentagonal. Ambulacral narrow and straight; pore-pairs uniserial except close to the edge of the peristome. Ambulacral plating trigeminate adorally and usually throughout; primary tubercles very small from ambitus upwards, so that ambulacra appear rather granular. Primary tubercle overlapping two elements and alternating with only slightly smaller tubercle on third element. Single primary tubercle to each interambulacral plate; distinctly smaller adapically. All tubercles perforate and crenulate. Interradial zone wide and with uniform granulation. Peristome about 50% test diameter. Buccal notches distinct. Spines and lantern unknown.
Distribution	Middle Jurassic (Bathonian-Callovian) of Somalia.
Name gender	feminine
Type	Recrosalenia somaliensis Currie, 1925, by monotypy.
Species Included	Only the type species
Classification and/or Status	Euechinoidea, Acreoechinoidea, Diadematoida, Heterodiadematidae Monotypic; subjective junior synonym of Monodiadema de Loriol, 1890.
Remarks	Interambulacral tuberculation is reminiscent of that of Farquhesonia and Heterodiadema. The lack of distinct primary tubercles in the ambulacral zones is a characteristic of Monodiadema Currie, E. D. 1925. The collection of fossils and rocks from Somaliland: part 5, Jurassic and Eocene Echinoidea. Monograph of the Geology Department, Hunterian Museum, Glasgow University 1(5), 46-78, pls 8-10.