†order Cheloniellida Broili 1932 (artiopod)
Parent taxon: Vicissicaudata according to R. Lerosey-Aubril et al. 2017
See also Ortega-Hernandez et al. 2013, Sepkoski 2002 and Van Roy et al. 2022
Sister taxa: Aglaspidida, Carimersa, Emeraldella, Eozetetes, Kodymirus, Sidneyia, Tardisia, Xenopoda
Subtaxa: Cheloniellon Drabovaspis Duslia Neostrabops Paraduslia Pseudarthron Triopus
Ecology:
Distribution:
• Devonian of Germany (1 collection)
• Silurian of the United Kingdom (1), United States (1: Wisconsin)
• Letna of the Czech Republic (1)
Total: 4 collections including 6 occurrences