An incomplete skeleton of a medium sized Tylosaur, one of the mosasaurs. These consists of the spinal bone and ribs.
black and white photograph
Digitized by Forsyth Digital Collections
Copyright University Archives, Fort Hays State University
Sternberg, George Fryer 1883-1969, "061_02: Portheus Skull and Tylosaur Skeleton" (2021). George Sternberg Album #4. 279.