Miragaia longicollum
| Miragaia longicollum Temporal range: Late Jurassic,
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| Skeleton model | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Dinosauria |
| Clade: | †Ornithischia |
| Clade: | †Thyreophora |
| Clade: | †Stegosauria |
| Family: | †Stegosauridae |
| Subfamily: | †Dacentrurinae |
| Genus: | †Miragaia Mateus, Maidment & Christiansen, 2009 |
| Species: | †M. longicollum
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| Binomial name | |
| †Miragaia longicollum Mateus, Maidment & Christiansen, 2009
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| Possible species | |
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| Synonyms | |
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Miragaia is a genus of long-necked stegosaurid dinosaur. Its fossils have been found in Upper Jurassic rocks in Portugal (Lourinhã Formation, Sobral Unit) and possibly also Wyoming and Utah, United States (Morrison Formation). Miragaia has the longest neck known for any stegosaurian, which included at least seventeen vertebrae. Some researchers consider this taxon to be a junior synonym of Dacentrurus.