出典:Wikipedia
出典:『Wikipedia』 (2010/12/12 10:27 UTC 版)
Bonnerichthys is a new genus of fossil fish within the family Pachycormidae that lived during the Late Cretaceous Period Fossil remains of this taxon are known from the Smoky Hill Member of the Niobrara Chalk Formation of Kansas (Late Coniacian-Early Campanian). It grew to around 20 feet in length, though not quite as large as the related Leedsichthys from the Jurassic of Europe which likely grew up to 30 feet.