I'm not sure about the airdates of the two Chased By Dinosaurs episodes featuring Nigel Marven. It says that The Giant Claw aired before Land Of Giants, though the latter episode is the first on the DVD I have.
The airdates are on the wiki, but without a source. Should I write "Citation Needed"? Or is there proof somewhere that the latter episode also aired on January 1, 2003?