Synallactida is a rankless clade of sea cucumbers, but is referred to as an order.[1] Taxa within Synallactida were previously classified in an order called Aspidochirotida, which was determined to be polyphyletic in 2017.[2]
| Synallactida | |
|---|---|
 | |
| Isostichopus badionotus, in family Stichopodidae | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Class: | Holothuroidea |
| Order: | Synallactida Miller, Kerr, Paulay, Reich, Wilson, Carvajal & Rouse, 2017 |
| Families | |
See text | |
List of families
Synallactida includes over 130 species in three extant families and two extinct genera:[3]
- Deimatidae Théel, 1882 – 3 genera
- Stichopodidae Haeckel, 1896 – 9 genera
- Synallactidae Ludwig, 1894 – 12 genera
- Genus †Collbatothuria Smith & Gallemí, 1991
- Genus †Tribrachiodemas Reich, 2010
