For those that lie to read their videos, there is a really informative video posted by the user Gemini Bull. The video is really a compilation of information found on all kinds of different sites online. The video and information on the video show a lot of images of Heliobatis and actually make it such that many different links would not be required to learn from this week, for the sake of keeping the post free from redundancy. One of the better sources online, that is not a video, to learn from is the virtual fossil museum. Prehistoric Wildlife also has some information though it is almost entirely taken from Wikipedia. It does have the only size comparison with a person shown online; that makes it worth a view as well.