Miragaia longicollum

Miragaia longicollum; Temporal range: Late Jurassic, ;
	Skeleton model
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	†Ornithischia
Clade:	†Thyreophora
Clade:	†Stegosauria
Family:	†Stegosauridae
Subfamily:	†Dacentrurinae
Genus:	†Miragaia; Mateus et al., 2009
Species:	†M. longicollum
Binomial name
	†Miragaia longicollum; Mateus et al., 2009
Other species
	M. longispinus? (Gilmore, 1914) Costa & Mateus, 2019;
Synonyms
	Alcovasaurus? Galton & Carpenter, 2016; Alcovasaurus longispinus? (Gilmore, 1914) Galton & Carpenter, 2016; Kentrosaurus longispinus? (Gilmore, 1914) Olshevsky & Ford, 1993; Natronasaurus? Ulansky, 2014; Stegosaurus longispinus? Gilmore, 1914;

Miragaia (named after Miragaia, the parish in Portugal and geologic unit where its remains were found) is a long-necked stegosaurid dinosaur. Its fossils have been found in Upper Jurassic rocks in Portugal (Lourinhã Formation, Sobral Unit) and possibly also Wyoming, 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.