Abstract
In this nomenclatural-historical account of the genera of the Conocardioidea (Mollusca: Rostroconchia) several inconsistencies and errors in the taxonomy and nomenclature of the Conocardioidea are clarified.Cardium aliforme J. de C.Sowerby, 1827, is recognised as type species of the genusConocardium Bronn, 1835, according to the ICZN 4th edition. Based on subsequent incorrect spelling which is in prevailing use, the spellingC. aliforme takes precedence overC. alaeforme andC. aliformis. Further nomenclatural difficulties concerning the generaHippocardia Brown,Pleurorhynchus Phillips,Lichas Steininger andRhipidocardium Fischer are settled. All genus group names and all higher taxa of the Conocardioidea until 2003 are checked from a nomenclatural point of view. The order name Conocardioida is emended herein into Conocardiida as originally used byNeumayr and because it does not conform with Latin grammar.
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