The Echinoid Directory

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Trochodiadema buhaysensis (Smith, 1995, p. 133)

[=Heterodiadema buhaysensis Smith, 1995, p. 113.]

Diagnostic Features	Distinguished from Trochodiadema lybanoticum de Loriol, 1900, by lacking small secondary tubercles between the primary tubercle and adradial suture beneath the ambitus.  There is also a more marked decreases in the size of primary tubercles above the ambitus in this species.
Distribution	Maastrichtian, Arabian Peninsula.
Type	Holotype NHM EE 3441, paratypes NHM EE3442-5, EE5019.
Classification and/or Status	Diadematoida, Heterodiadematidae, Trochodiadema
Remarks	Smith, A. B. 1995. Late Campanian-Maastrichtian echinoids from the United Arab Emirates-Oman border region. Bulletin of the Natural History Museum, London (Geology Series) 51, 121-240.