This specimen of the teeth and lower jawbone of a large marine reptile was discovered by Rick Ross during the construction of the Inland Highway, near the Dove Creek intersection, on Vancouver Island. Given the size, this toothy fellow could have been as much as seven (7) metres long and weighed up to a tonne. If you look closely at the rock, you can see several smaller disc-shaped objects to the upper right. These are part of this fellow's sclerotic eye-ring.
This specimen is now housed in the Courtenay and District Museum on Vancouver Island, British Columbia. He's tagged as a mosasaur, but the court is still out (and will need more study) to see if we are looking at a Tylosaurus.