original description
Smith, A.B. (2016). British Jurassic Regular Echinoids. <em>Monograph of the Palaeontographical Society.</em> 170 (646): 69-176, pls 42-82.
page(s): 69 [details]
From editor or global species database
Diagnosis Small, regular echinoid with a large apical disc whose plates are not firmly bound to the corona. Ambulacral plating simple and uniform, with every third element bearing a primary tubercle; pore-pairs small and uniserially aligned. Interambulacral plates bear a single large primary tubercle with a small, perforated mamelon and strongly crenulated platform. Teeth trapezoidal in cross-section, incorporating large triangular secondary plates. Spines simple, needle-like and much longer than the diameter of the test. [details]
Etymology From the Latin cune for wedge-shaped and dens for tooth, in reference to its distinctive tooth structure. [details]
Fossil range Lower Jurassic (Sinemurian to Pliensbachian) [details]