Species: borealis GALTON, 1985
Etymology: Borealis (Latin), north, with reference to it being only record of this family from the northern hemisphere.

Holotype: British Museum of Natural History R2870-R2874, R2876-R2878

Locality: Wedmore Hill, a small quarry or pit in the parish of Wedmore, to the southeast of the village of Wedmore, in the Vale of Glastonbury, Somerset County, England, Southern United Kingdom.

Horizon: Wedmore Stone, Westbury Formation, Penarth Group.

Biostratigraphy:

Age: Rhaetian Stage, Uppermost Late Triassic Epoch, Late Triassic.

Material:

BMNH R2878a: Distal part of ?left fibula.
Note: Paleopathology, distal end has a large swollen region.