Emended restoration of titanocrinus sumralli guensburg and Sprinkle, 2003 (Echinodermata, Crinoidea)

摘要

We provide clarification of the nature of the junction between cup and arms in Titanocrinus sumralli Guensberg and Sprinkle 2003, accompanied by an emended reconstruction. This morphological feature of so basal a species informs further phylogenetic studies.