†family Palaeocaudinidae Boczarowski 2001 (sea cucumber)
Full reference: A. Boczarowski. 2001. Isolated sclerites of Devonian non−pelmatozoan echinoderms. Palaeontologia Polonica 59:3-220
Parent taxon: Elasipoda according to A. Boczarowski 2001
Sister taxa: Deimatidae, Laetmogonidae, Oneirophantites, Praeeuphronides, Psychropotidae, Uncinulina
Subtaxa: Palaeocaudina
Ecology: epifaunal deposit feeder-detritivore