Thats like releasing a cowboy game which didn't feature a chiropractor who lives in a motorised fish tank.
Still... as the history of caveman games shows us, not every game has been so liberally lewd with prehistoric fact.
Though there's no evidence of these creatures existing in the fossil record, there's no reason to believe that they didn't. More certain in its historical veracity is Trogg's weapon of choice - a yo-yo. Some believe that it was first used in Ancient Greece as a type of rubbish weapon. Presumably, along with hacky-sacks, hula hoops, and the Fisher Price Chatter Telephone.
Inevitably, it featured a variety of dinosaurs, some of which wore hats. Indeed, even the object of Bonk's affections - Princess Za - was a pink dinosaur, indicating a degree of interspecies breeding that would account for our current Royal Family and the Chancellor of the Exchequer - The Right Honourable George Osborne.
Death was ever present - from drowning, falling off things, or attacks from wildlife - as was the threat of your character falling asleep at inopportune moments. Collecting stones would grant your villagers new abilities - such as swimming - and spear-chucking. With a subtle enviro-friendly message, over-hunting would lead to a decline in local fauna, making it harder to achieve your objectives.
Talking of not meeting your objectives...
Typically, Molyneux announced the cancellation of B.C. with one last blast of tear-stained hype: "The decision to suspend work on any games project is always a very difficult one, particularly when it is a title with the potential of BC". Oh, Peter!