] > 52476 Zapteryx xyster Jordan & Evermann, 1896 Rhinobatidae Guitarfishes Rhinobatinae Rajiformes Elasmobranchii (sharks and rays) Eastern Pacific. Not recorded in Compagno's 1999 checklist (Ref. 35766). Ovoviviparous (Ref. 50449). reef-associated; marine tropical Data deficient () harmless McEachran, John Acero, A.P. and R. Franke. 1995