| Nikkasaurus Temporal range: middle Permian
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Synapsida |
| Clade: | Therapsida |
| Suborder: | †Biarmosuchia |
| Family: | †Nikkasauridae |
| Genus: | †Nikkasaurus Ivahnenko, 2000 |
| Species: | †N. tatarinovi
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| Binomial name | |
| †Nikkasaurus tatarinovi Ivahnenko, 2000
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Nikkasaurus is an extinct genus of therapsids first named and described by Ivakhnenko.