Bonnerichthys

Bonnerichthys Temporal range: Late Cretaceous, 89–66 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Restoration
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	†Pachycormiformes
Family:	†Pachycormidae
Genus:	†Bonnerichthys Friedman et al., 2010
Species:	†B. gladius
Binomial name
†Bonnerichthys gladius (Cope, 1873)
Synonyms
Portheus gladius Cope, 1873 Protosphyraena gladius (Cope, 1873)

Bonnerichthys is a genus of fossil fishes within the family Pachycormidae that lived during the Coniacian to Maastrichtian stage of the Late Cretaceous.^[1] Fossil remains of this taxon were first described from the Smoky Hill Member of the Niobrara Chalk Formation of Kansas (Late Coniacian-Early Campanian), and additional material was later reported from the Pierre Shale, Mooreville Chalk, Demopolis Chalk, Wenonah Formation, and Moreno Formation, among other localities.^[2] It grew to at least 5 metres (16 ft) in total body length,^[1] substantially less than the related Leedsichthys from the Jurassic which likely grew up to 16.5 metres (54 ft).^[3]