Holothuroidea - Arthrochirotida
Full reference: A. Seilacher. 1961. Holothurien in Hunsrückschiefer (unter-Devon). Notizblatt des hessischen Landesamtes für Bodenforschung zu Wiesbaden 89:66-72
Parent taxon: Holothuroidea according to D. L. Frizzell and H. Exline 1966
Sister taxa: Acanthocaudina, Achistrulidae, Alexandritidae, Apodacea, Apodida, Arthrochirota, Aspidochirotacea, Aspidochirotida, Bogschites, Calcancorellidae, Canisiidae, Chiridotitidae, Conisia, Crucivirga, Dactylochirotida, Dendrochirotacea, Dendrochirotida, Elasipodida, Etheridgellidae, Harinellites, Irinella, Kaliobullitidae, Kozurellidae, Kuehnitidae, Laetmophasma, Leptosynapta, Molpadiida, Ocellothuria, Palelpidiidae, Paractinopoda, Placerotapis, Priscopedatidae, Protocaudinidae, Punctatitidae, Rotiformidae, Sclerothurites, Semperitidae, Stichopitidae, Synaptellidae, Tetravirga, Theeliidae, Thyonidium, Triradites
Subtaxa: none
Ecology: shallow infaunal detritivore
Distribution: