This Specimen has been sold.
Large Gar Fish? Vertebrae - Hell Creek Formation
This is possibly a fossil Gar fish vertebrae from the Hell Creek Formation. The vertebrae of gar fish are unique for fish of the time in that they are opisthocoelous, meaning that the centrum is convex in the front and concave in the back. This vertebrae shows all of the morphological characteristics of a gar fish, yet it is very large. Gar of today are known to grow up to 6 feet in length so it is possible this belonged to a massive individual. The specimen is .74" long, shows little weathering, and portions of the processes have eroded away.