| Species | Simocephalus vetulus (a water flea) |
| Genus | Simocephalus (a genus of water fleas) |
| Family | DAPHNIIDAE (a family of water fleas) |
| Infraorder | Cladocera (water fleas) |
| Suborder | ONYCHOCAUDATA (a suborder of crustaceans) |
| Order | DIPLOSTRACA (water fleas) |
| Subclass | PHYLLOPODA (apuses and water fleas) |
| Class | BRANCHIOPODA (branchiopods) |
| Subphylum | CRUSTACEA (crustaceans) |
| Phylum | ARTHROPODA (arthropods) |
| Superphylum | ECDYSOZOA (skin shedders) |
| Clade | Bilateria (bilaterally symmetrical animals) |
| Subkingdom | EUMETAZOA (metazoans) |
| Kingdom | ANIMALIA (animals) |
| Domain | Eukaryota (eukaryotes) |
| Life | BIOTA (living things) |
| Records of Simocephalus vetulus (a water flea) : | ||||
| 1: Simocephalus vetulus (a water flea) | ||||
| 28 Sep 2003 | OSGR: SU56 | 51° 20’ N, 1° 10’ W | Vice County: Berks (VC 22) | England |
| females, in Spirogyra sample from garden pond | ||||
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| 2: Simocephalus vetulus (a water flea) | ||||
| 18 Mar 1978 | OSGR: SU94 | 51° 10’ N, 0° 40’ W | Vice County: Surrey (VC 17) | England |
| in isolated pond | ||||
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Simocephalus vetulus (a water flea) may be included in identification literature listed under the following higher taxa:
 NBN (data.nbn.org.uk)
has a distribution map for Simocephalus vetulus (a water flea)
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 BioInfo (www.bioinfo.org.uk)
has 0 host/parasite/foodplant and/or other relationships for Simocephalus vetulus (a water flea)
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