Genus: Bathyspondylus DELAIR, 1982
Etymology: Greek, bahtys, “deep” and Greek, spondylus, “vertebra”: Deep vertebra.

Species: swindoniensis DELAIR, 1982
Etymology: In reference to the Old Windon Brick and Tile Company, Wiltshire County, England, Southern United Kingdom.

Holotype: Devizes Museum No. 1774

Locality: Old Swindon Brick and Tile Company's pit at Swindon, Wiltshire County, England, Southern United Kingdom.

Horizon: Kimmeridge Clay.

Biostratigraphy:

Age: Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material: 20 pectoral centra, 23 dorsal centra, 1 caudal centrum, fragmentary neural arches, ribs, ischium, a pubis, complete and broken phalangeals and metacarpals.