If somebody can get Arch to draw this giant dog/Triceratops with head knives and a rock helmet, I'll write a paper describing it as a new species in the Annals of Improbable Research, and submit it for consideration for the Ig Noble Prize.
Lots of papers have been written describing different species of Triceratops based only on differences in their horn shape and neck frills. I'd have to check Arch's drawing against the published literature, but I'm fairly certain head knives and a rock helmet are unique morphological characteristics, never before described in ceratopsian dinosaurs. Or dogs.
Arch is welcome to be co-author if he wants, but either way, I'd credit him as both the paleo artist and discoverer of the new species.
Unless Arch has a strong preference for the species name, I'd start a poll and let surlyhorns posters name it.