异缓步纲（学名：Heterotardigrada）为缓步动物门的一个纲。
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下级分类
本纲包括以下目：[1]
- Arthrotardigrada
- Anisonychidae
- Archechiniscidae
- Batillipedidae
- Coronarctidae
- Halechiniscidae
- Neoarctidae
- Neostygarctidae
- Renaudarctidae
- Stygarctidae
- Styraconixidae
- Styraconyxidae
- Tanarctidae
- 棘节目 Echiniscoidea Richters，1926
参考文献
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