Data from: Morphometric analysis of inter- and intraspecific variation in the Cambrian helcionelloid mollusc Mackinnonia

负责人：

关键词：

Helcionelloida;species concept;incipient species;Elliptical Fourier Analysis;Early Cambrian;Davidonia;Cambrian Series 2;Morphometrics

DOI：

doi:10.5061/dryad.5b7n3

摘要：

Phylogenetic relationships within the helcionelloids have been difficult to establish. One of the reasons for this is that qualitative approach