Species: dawni CRUICKSHANK, MARTILL & NOE, 1996
Etymology: In honor of Alan Dawn, discoverer of the genus.
Holotype: PETMG R338
Locality: The King’s Dyke Clay Pit at Whitlesey, near Peterborough, Cambridgeshire County, England, Southern United Kingdom.
Horizon: Bed 10/11, Peterborough Member of the Oxford Clay Formation.
Biostratigraphy: Jason Zone, Jason Subzone, (Monster beds of Martill, 1985).
Age: Callovian Stage, Upper Dogger Epoch, Middle Jurassic.
Material: Fragmentary specimen.