The cell is thecate, of large dimensions, elongated, composed of a reduced “head” (epitheca) and a "body" (hypotheca) of variable length with a swelling in the centre that terminates in an elongated "tail". At the extremity of the tail is the slightly curved “foot". In addition there is a prominent spine on the heel and two anterior spines on the foot.

Marine species, cosmopolitan.

Distribution: Atlantic Ocean: Canary Islands (Gil-Rodríguez et al., 2003; Anon, 2011); South America: Brazil (Odebrecht, 2010).

Dinophyceae. In: Catálogo de plantas e fungos do Brasil. Vol. 1., (Forzza, R.C. Eds), Rio de Janeiro: Andrea Jakobsson Estúdio; Instituto de Pesquisas Jardim Botânico do Rio de Janeiro., Odebrecht C., 2010, 366-383

Listado preliminar de especies marinas de Canarias., Tenerife: Observatorio Ambiental Granadilla, Anon, 2011, 1-174

Proctoctista. In: Lista de especies marinas de Canarias (algas, hongos, plantas y animales). (Moro, L., Martín, J.L., Garrido, M.J. & Izquierdo, I. Eds), Las Palmas: Consejería de Política Territorial y Medio Ambiente del Gobierno de Canarias., Gil-Rodríguez M.C., Haroun R., Ojeda Rodríguez A., Berecibar Zugasti E., Domínguez Santana P., Herrera Morán B., 2003, 5 - 30