A nomenclator of the Palaeozoic taxa of the family Parallelodontidae (Bivalvia, Arcida)

The Parallelodontidae are a long-living family in the bivalve superfamily Arcoidea, ranging from the Devonian to the Recent. Their fossil taxonomic diversity, however, is poorly known – especially so for the Palaeozoic. Here, we intend to fill this gap and provide a list of all Palaeozoic genus- and species-group names of the family published in the literature. This nomenclator compiles details on type species (genus-group names), type locality, type horizon and type material (species-group names), along with information on the original source, as well as remarks on taxonomic status, nomenclature and systematic placement. The catalogue encompasses 16 genus-group names (eleven of which are currently considered as valid) and 247 species-group names (213 valid) proposed within or currently attributed to the Parallelodontidae. Our contribution uncovers numerous widely unknown taxa and reveals an unexpected diversity of the family during the Palaeozoic, thus serving as a basis for future revision and completion of taxonomic databases.