The Echinoid Directory

Ambipleurus darchiaci (Duncan & Sladen, 1882)

Diagnostic Features	Differs from D. ziczac in having lateral platforms of granulation on either side of the primary tubercle. Two large wedge-shaped sutural pits on either side of the primary interambulacral tubercle.
Distribution	Latest Palaeocene-early Eocene Ranikot Limestone, Pakistan
Remarks	Synonymised with D. haimei Duncan & Sladen, 1882 by Smith & Jeffery (2000). Smith, A. B. & Jeffery, C. H. 2000. Maastrichtian and Palaeocene echinoids: a key to world faunas. Special Papers in Palaeontology 63, 1-404.