2015 October 15, “The Postcranial Skeleton of an Exceptionally Complete Individual of the Plated Dinosaur Stegosaurus stenops (Dinosauria: Thyreophora) from the Upper Jurassic Morrison Formation of Wyoming, U.S.A.”, in PLOS ONE, →DOI:
Presacral 27 is fused to the sacrum and is a dorsosacral.