Placophiothrix forms a monophyletic clade with Macrophiothrix acc. to Hoggett (1990) and O'Hara et al. (2017, suppl.). [details]
The superfamilies Gorgoncephalidea and Euryalidea proposed by Okanishi & Fujita (2013) were not supported by O'Hara ... [details]
Records under revision. Families will be changed soon. [details]
Ophiozonella is currently paraphyletic. Species with three or more arm spines group together, species with fewer ... [details]