"Alticornis"
 

Triceratops horn cores

Bronze, edition of 100, size: 9" high
Artist: William Monteleone
Price: $400
From the original name Bison alticornis. Turns out they weren't bison! The grooves on the horns are where blood vessels once lay. There would have been a sheath of horn covering these bony shafts making them 20% to 30% longer in life.