Alternative spelling: Apoda
Full reference: J. F. Brandt. 1835. Prodromus descriptionis animalium ab H. Mertensio in orbis terrarum circumnavigatione observatorum. Animalia Mertensii. Petropoli, Lipsiae 1:1-75
Parent taxon: Holothuroidea according to H. W. Kozur and H. Mostler 2008
See also Boczarowski 2001, Frizzell and Exline 1966, Gilliland 1992, Gilliland 1993, Kerr and Kim 2001, Pawson 1966, Reich 2002, Schlumberger 1890 and Sepkoski 2002
Sister taxa: Acanthocaudina, Achistrulidae, Alexandritidae, Apodacea, Arthrochirota, Arthrochirotida, 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: Achistridae Calcancoridae Chiridotidae Holothuriopsis Myriotrochidae Myriotrochus Porachistrum Synaptidae Synaptitidae