Aeropsis rostrata (Wyville Thomson, 1877), Echinoidea, Echinodermata, with parasitic clam Kelliola symmetros (Jeffreys, 1876), Montacutidae, Bivavlvia, Mollusca, from Oliver (2012: fig. 5). Source : P. Graham Oliver : Taxonomy of some Galeommatoidea (Mollusca, Bivalvia) associated with deep-sea echinoids: A reassessment of the bivalve genera Axinodon Verrill & Bush, 1898 and Kelliola Dall, 1899 with descriptions of new genera Syssitomya gen. nov. and Ptilomyax gen. nov. European Journal of Taxonomy, 12: 1-24, 2012 ISSN 2118-9773.
Extracted from: David, B., T. Choné, A. Festeau & C. de Ridder (2004). Antarctic Echinoids, an Interactive Database. Editions Universitaires Dijon. Cd Rom
right lateral view from Cooke, C. W. 1957. Rhynobrissus cuneus, a new echinoid from North Carolina. Proceedings of the United States National Museum 107, 9-12.
Tripatagus pittsi Zachos, 2012; MMNS IP-103.1 (paratype). Marianna Limestone, Vicksburg Group, Rupelian, Oligocene of Marquette Cement Company quarry, near Brandon, Mississippi, USA. Apical view. Scale bar equals 10 mm. Image by Louis G. Zachos.