There are a couple of articles written about this family. You may need to order them through your library because I'm not sure if they are open access or not. But here are the references:
Vecchione, M. and Young, RE. 1998. The Magnipinnidae, a newly discovered family of oceanic squid (Cephalopoda: Oegopsida). South African Journal of Marine Science. 20(1): 429-437
Vecchione, M. and Young, RE. 2006. The squid family Magnapinnidae (Mollusca: Cephalopoda) in the Atlantic Ocean, with a description of a new species. Proceedings of the Biological Society of Washington. 119(3): 365-372
There is also some video of this creature on the Smithsonian site, I think it's under a link called Cephalopods in Motion, but you'd have to check.