Genus: Hessinodon CAPPETTA, MORRISON & ADNET, 2019
Etymology: In honor of William A. HEssin (Hornby ISland Fossil Sahrt Team member) in recognition of his extensive work on Canadian Trilobites, Beatrice R. Hessin (1829-1999) is also honored and Greek, odon, "tooth".

Species: wardi CAPPETTA, MORRISON & ADNET, 2019
Etymology: In honor of Peter D. Ward of the University of Washington, USA. in recognition of all his work as specialist in Nanaimo Group ammonites/nautiloids and recent natuilus, documenting teh biostratigraphy of Hornby Island and especially for his help and encouragement during teh colleciton of shark material on Hornby Island.

Holotype: RBCM P1249

Locality: Collishaw Point Site, (2 teeth), and Manning Point site (2 teeth), Hornby Island, British Columbia Province, Canada.

Horizon: Northumberland Formation, Nanaimo Group.

Biostratigraphy:

Age: Late Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:Teeth.

Paratype: RBCMP1312: Tooth.