This is an original painting by Walter Velez (1939-2018) for the science fiction novel by Robert J. Sawyer about two rival paleontologists who travel back in time to the late Cretaceous period , published by Berkley/Ace Books 1994 (I show the cover for reference) Gorgeous panoramic artwork, large and dramatic visual effect in landscape "wraparound" format, handpainted in acrylic on stretched canvas, 24" x 32" and signed by Velez.