It appears Canada embraces the ancient folks, unlike The US rumor mill brands them as Villains, and Monsters. The stamps were issued in1990.
The others in the series ,the giant squid has been proven to exist, Ogo Pogo there are some very interesting theories on that currently. Were Wolfs,well I find it hard to believe they are a creature like the classics describe, but are they another dead ended species who's DNA is from evolutionary History?