Species: sigmala FRASER, 1986
Etymology:
Holotype: AUP No. 11083
Locality: Slickstones (Cromhall) Quarry, (ST 704916), Avon County, England, Southern United Kingdom.
Horizon: Karstic fissures in Dinatian limestone.
Biostratigraphy:
Age: Carnian/Norian Stage, Upper Late Triassic Epoch, Late Triassic.
Material: Right maxilla.
Paratypes:
AUP No. 11082: Left dentary.
AUP No. 11084: Left palatine.
Referred material:
AUP No. 11360, 11361, 11083: Maxillae.