Back Spiralia AF حلزيات Arabic حلزيات ARZ Спиралови Bulgarian Spiralia BS Spiralia Catalan Spiralia German Spiralia Spanish مارپیچداران FA Spiralia French
| Spiralia Temporal range:
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Subkingdom: | Eumetazoa |
| Clade: | ParaHoxozoa |
| Clade: | Bilateria |
| Clade: | Nephrozoa |
| (unranked): | Protostomia |
| (unranked): | Spiralia sensu Edgecombe et al. 2011 |
| Clade | |
The Spiralia are a morphologically diverse clade of protostome animals, including within their number the molluscs, annelids, platyhelminths and other taxa.[1] The term Spiralia is applied to those phyla that exhibit canonical spiral cleavage, a pattern of early development found in most (but not all) members of the Lophotrochozoa.[2]
- ^ Giribet, G. (April 2008). "Assembling the lophotrochozoan (=spiralian) tree of life". Philosophical Transactions of the Royal Society B: Biological Sciences. 363 (1496): 1513–22. doi:10.1098/rstb.2007.2241. PMC 2614230. PMID 18192183.
- ^ "Explanations.html". Archived from the original on 2013-02-07. Retrieved 2009-06-28.