| Ornithopsis, Chondrosteosaurus, Pelorosaurus, Betasuchus, Anoplosaurus|
Eucamerotus (meaning "well-chambered" in reference to the hollows of the vertebrae) was a genus of sauropod dinosaur from the Barremian-age Lower Cretaceous Wessex Formation (Wealden) of the Isle of Wight, England. It is known from vertebral remains, and a partial skeleton has been referred, although this has not been accepted.
John Hulke named the genus from several partial dorsal vertebrae found by William D. Fox near Brighstone Bay: NHMUK R2522 (a neural arch), and NHMUK R88, NHMUK R89, NHMUK R90 (two dorsal vertebrae), and NHMUK R2524 (a dorsal from a juvenile). He did not provide it with a species name nor select a holotype, and within a few years thought that it was the same as Ornithopsis hulkei. Other authors preferred Pelorosaurus as a synonym.
William T. Blows resurrected the genus in 1995 as a valid brachiosaurid, added the specific name foxi, selected BMNH R2522 as the type specimen, designated the other finds as paratypes and referred additional vertebrae and partial skeleton MIWG-BP001 to it. This last point has not been generally accepted; unfortunately, this skeleton has never been officially described.
Naish and Martill (2001) suggested Eucamerotus was a dubious brachiosaurid, and did not find Blows' characters convincing. Upchurch et al. (2004) considered it to be a dubious sauropod. Santucci and Bertini (2005), however, suggested it was a titanosaurian. However, a recent review of Wealden sauropods from the UK places Eucamerotus at Titanosauriformes incertae sedis.
The vertebrae are around twenty centimetres long. If a brachiosaurid, Eucamerotus may have been around 15 m (49.2 ft) long, small for a sauropod. As any kind of sauropod, it would have been a quadrupedal herbivore.