This mentioned taxonomy is an attempt to make an conclusive assignment from the different classifications of various scientists. Because the taxonomy may change due to the latest investigative methods and other findings, our map is a guide only.
S. Martinez, 2005 - A New Species of Abertella (Echinoidea: Scutellina) from the Gran Bajo del Gualicho Formation (Late Early Miocene-Early Middle Miocene), Río Negro Province, Argentina - Journal of Paleontology (79), 1229-1233 (journal article, English)
W. Waagen, 1883 - Productus Limestone Fossils, Part IV, fas. 2 - Salt Range Fossils, Palaeontologia Indica, Series 13 (1), 391-546 (serial monograph, English)