Genus: Chondrosteosaurus OWEN, 1876 (nomen dubium)
Etymology: Greek, chondros “cartilage”, Greek, osteon, “bone”, and Greek, sauros, “lizard”: “Cartilage-boned lizard”.
= Chondrosteus HUENE, 1907/08 (sic)/AGASSIZ, 1833-1834

Species: gigas OWEN, 1876
Etymology: Latin, gigan, "giantic."
= Chondrosteus gigas (OWEN, 1876) (sic)

Holotype: NHMUK (old BMNH) 46769 and NHMUK (old BMNH) 46780

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

Horizon: Wessex Formation, Wealden Group.

Biostratigraphy:

Age: Valanginian-Hauterivian Stage, Neocomian Subepoch- Barremian Stage, Lower Gallic Subepoch, Early Cretaceous Epoch, Early Cretaceous.

Material: 2 posterior cervical centra.



Referred material:

= Eucamerotus HULKE, 1872 (nomen dubium; no specific name assigned)
Etymology:

Holotype: SM

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

Horizon: Wessex Formation, Wealden Group.

Biostratigraphy:

Age: Valanginian-Hauterivian Stage, Neocomian Subepoch- Barremian Stage, Lower Gallic Subepoch, Early Cretaceous Epoch, Early Cretaceous.

Material: Middle section of neural arch.