Is Cyclocardia (Conrad) a wastebasket taxon? Exploring the phylogeny of the most diverse genus of the Carditidae (Archiheterodonta, Bivalvia) ...

• Main Authors: Perez, Damian, Giachetti, Luciana
• Format: Dataset
• Language: English
• Published: Dryad 2019
• Subjects: Bivalvia; Carditidae; morphological disparity; Cyclocardia; New Zealand; Antarc*; Antarctica; Alaska
• Online Access: https://dx.doi.org/10.5061/dryad.6b6150p; https://datadryad.org/stash/dataset/doi:10.5061/dryad.6b6150p

The carditid genus Cyclocardia is currently the most diverse genus of the family, including nearly 180 nominal species from a wide stratigraphical (Cretaceous–Recent) and geographical range (Antarctica, South and North America, Europe, Africa, Alaska, Russia, Japan, and New Zealand). Due to the lack of autapomorphies in the diagnosis of the genus and its large account of species, we re-evaluated the systematic and phylogenetic status of Cyclocardia. We carried out three approaches: bibliographic revision, phylogenetic analysis, and morphological disparity exploration. We used a shell-character matrix including 65 taxa (two outgroups, 29 non-Cyclocardia carditids, and 28 species of Cyclocardia) for phylogenetic and disparity analyses. The morphological disparity analysis was conducted using Maximum Observable Rescaled Distances for calculate distance matrix, and comparing Cyclocardia species and other carditid groups. According to our results, Cyclocardia is a ‘wastebasket taxon‘, chiefly because its ... : Appendix 1Bibliographic catalogue of species assigned to Cyclocardia in the bibliography.Appendix 2Table with material included for phylogenetic and morphological disparity analyses.Appendix 3List of morphological characters used for build the data-matrix of Cyclocardia species.Appendix 4Data-matrix in TNT format for phylogenetic analysis, including constraint model.Appendix 5Results of phylogenetic analysis, including tree topology, index, and length.Appendix 6List of common synapomorphies of clades obtained. ...