Ichthyosaur anterior dorsal vertebra
Species: Ichthyosaurus sp.
Geological Time Scale
lower Jurassic sediments
Collector: John Brewer
Acquired by: Field Collection
The two elongated fossils either side of the vertebra I think are fish spines. They don't seem to fit the anatomy of ichthyosaur ribs. Further prep would confirm either way but would be destructive to the block.
Lit: De La Beche & Conybeare (1821), Conybeare (1822), Owen (1840, 1851, 1881, 1849-84), McGowan & Motani (2003)