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Siphonocryptida is an order of millipedes, comprising the sole family Siphonocryptidae. With only seven described species, the Siphonocryptida is the second smallest millipede order, surpassed only by Siphoniulida, with two species. A 2026 paper found the order to be nested inside Polyzoniida.
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order family classification siphonocryptus hirudicryptus zigzag millipedes siphoniulida polyzoniida comprising sole siphonocryptidae seven described species second smallest millipede surpassed two
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Siphonocryptida | is a | order of millipedes | 0.90 | text |
| Siphonocryptida | is a | second smallest millipede order | 0.90 | text |
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