Dinosaur Era Mega Fish Vertebrae
Species: Xiphactinus Audax
Age: Approx 83 Million Yeras Old
Cretaceous Era
Discovered: Niobrara Formation, Smoky Hill, Chalk Grove County, Kansa U.S.A.
Measures 2'
 
This species was one of the largest predatory fish to ever live, growing up to twenty feet in length.
 
- The Xiphactinus Audax 
Xiphactinus is an extinct genus of large predatory marine bony fish that lived during the Late Cretaceous. When alive, the fish would have resembled a gargantuan, fanged tarpon. The species Portheus molossus described by Cope is a junior synonym of X. audax. Skeletal remains of Xiphactinus have come from the Carlile Shale and Greenhorn Limestone of Kansas, and Cretaceous formations all over the East Coast in the United States, as well as Europe, Australia, the Kanguk and Ashville Formations of Canada, La Luna Formation of Venezuela and the Salamanca Formation in Argentina.