The Echinoid Directory
Contributed by Andrew Smith, August 2011
Pseudoplopodia Valette, 1905, p. 294
| Diagnostic Features | Distinguished from Diplopodia by having all compound plates composed of just three elements (in Diplopodia adapical plates have four or sometimes five elements) [from Arnaud 1906] |
|---|---|
| Distribution | Jurassic, western Europe |
| Name gender | feminine |
| Type | Arnaud did not designate a type species but included three species - D. callovensis, P. pernoi [for the specimen illustrated in Cotteau Paleontologie francais pl. 342 under the name Diplopodia aequalis Agassiz] and D. planisima. No type has been designated, and so I here treat D. calloviensis as the type species. |
| Classification and/or Status | A subjective junior synonym of Diplopodia. As Lambert & Thiery (1911, p. 186) point out, the number of elements forming aboral plates in species of Diplopodia is rather variable. |
| Remarks | Valette, A. 1905. Etude sur la formule porifere d\'un certain nombre d'echinides reguliers. Bulletin de la Societe scientifique de l'Yonne 59, 271-311. Lambert, J. & Thiery, P. 1909-1925. Essai de nomenclature raisonnee des echinides. Chaumont. |