The Echinoid Directory

Amplaster alatus Rossi de Garcia & Levy, 1989; Patagonia Formation, Late Oligocene or Miocene, Chubut Province, Argentina. Oral (upper) and lateral (lower) views of holotype from R. Mooi, S. Martinez & S. G. Parma 2000. Phylogenetic systematics of Tertiary monophorasterid sand dollars (Clypeasteroida: Echinoidea) from South America. Journal of Paleontology 74, 263-281 (fig. 5, p. 271).

Length of specimen 73 mm.