Genus: Calamosaurus LYDEKKER, 1891 (nomen dubium)
Etymology: Greek, kalamos, “reed” and Greek, sauros,"lizard": Reed lizard.
= Calamospondylus LYDEKKER, 1889 (nomen dubium)
Etymology: Greek, kalamos,“reed” and Greek, spondylus, "vertebrae": reed vertebrae.

Species: foxi (LYDEKKER, 1889) LYDEKKER, 1891 (nomen dubium)
Etymology: In honor of William Fox.
= Calamospondylus foxi LYDEKKER, 1889 (nomen dubium)

Holotype: NHMUK (old BMNH) R901

Locality: Brook, Isle of Wight County, England, Southern United Kingdom.

Horizon: Wessex Formation, Wealden Group.

Biostratigraphy:

Age: Barremian Stage, Lower Gallic Subepoch, Early Cretaceous Epoch, Early Cretaceous.

Material: 2 fragmentary cervical vertebrae.