Boreiohydrias

Boreiohydrias
Temporal range: Turonian
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Division: Teleostei
Order: Polymixiiformes
Family: †Boreiohydriidae
Genus: †Boreiohydrias
Species:
†B. dayi
Binomial name
†Boreiohydrias dayi
Murray & Cumbaa, 2013

Boreiohydrias is an extinct genus of marine polymixiiform ray-finned fish, related to modern beardfish, that lived during the Turonian stage of the Late Cretaceous epoch. It is the only confirmed member of the family Boreiohydriidae, although a second potential freshwater boreiohydriid is known in Elnorichthys from the Maastrichtian of Alberta.

Distribution

Boreiohydrias dayi is known from the shore of Lac des Bois in the Northwest Territories, Canada, in Turonian-aged sediments deposited in the aftermath of the Cenomanian-Turonian boundary event. This locality represents an open-water environment on the northern edge of the Western Interior Seaway, and is potentially correlated with the Cenomanian and Turonian-aged Slater River Formation.

References

  1. 1 2 Murray, Alison M.; Cumbaa, Stephen L. (5 March 2013). "Early Turonian acanthomorphs from Lac des Bois, Northwest Territories, Canada". Journal of Vertebrate Paleontology. 33 (2): 293–300. doi:10.1080/02724634.2013.722574. ISSN 0272-4634. Retrieved 25 June 2025 – via Taylor and Francis Online.
  2. ↑ Murray, Alison M.; Brinkman, Donald B.; Scrøder, Ane Elise; Newbrey, Michael G.; Van Loon, Lisa L.; Banerjee, Neil R. (2026). "Early diversity of acanthomorph fishes in fresh waters of the Late Cretaceous". Canadian Journal of Zoology. 104: 1–18. doi:10.1139/cjz-2025-0127. ISSN 0008-4301.
  3. ↑ Cumbaa, Stephen L.; Day, Richard; Gingras, Murray; Haggart, James W.; Holmes, Robert B.; Murray, Alison M.; Schröder-Adams, Claudia (2018-11-01). "Lac des Bois, a locality in the northern Western Interior Seaway (Canada) with Tethyan faunal connections during the Cenomanian/Turonian Thermal Maximum". Cretaceous Research. 91: 412–428. doi:10.1016/j.cretres.2018.07.012. ISSN 0195-6671.