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Polypedina Lambert, 1933, p. 46

Diagnostic Features	Test depressed; subpentagonal in outline. Apical disc unknown. Tubercles perforate and non-crenulate. Ambulacra composed at ambitus of polygeminate plates, with 5 pore-pairs to a compound plate.  Pore-pairs uniserial, slightly undulose; short phyllodes developed adorally.  Each plate with a large primary tubercle. Interambulacral plates with a large primary tubercle; secondary tubercles few. Peristome very large with buccal notches.
Distribution	Lower Jurassic (Pliensbachian), Morocco
Type	Polypedina tounatensis Lambert, 1933, p. 46 by original designation
Species Included	Only the type species
Classification and/or Status	Pedinoida, Pedinidae Monotypic; possible junior subjective synonym of Pseudopedina, but better material is needed.
Remarks	Mortensen (1940) redescribed the species and provided a new plating diagram.  He synonymized this species with Polydiadema, an Upper Jurassic taxon with strongly crenulate tubercles, but noted that preservation was very poor.  Here we retain it as a pedinid but too poorly known to be placeable with certainty. Lambert, J. 1933. Echinides fossiles du Maroc. Service des Mines et de la Carte geologique, Notes et Memoires 27, 1-79, pls 1-3. Mortensen, T. 1940. A monograph of the Echinoidea. III.1. Aulodonta. C. A. Reitzel, Copenhagen.