| Lusonectes Temporal range: Early Jurassic,
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|---|---|
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| Holotype partial skull and explanatory drawings | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Superorder: | †Sauropterygia |
| Order: | †Plesiosauria |
| Family: | †Microcleididae |
| Genus: | †Lusonectes Smith, Araújo & Mateus, 2012 |
| Species: | †L. sauvagei
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| Binomial name | |
| †Lusonectes sauvagei Smith, Araújo & Mateus, 2012
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Lusonectes (meaning "Portuguese swimmer") is an extinct genus of microcleidid plesiosaur from the Early Jurassic (Toarcian) São Gião Formation of Portugal.