YMBABM if, upon finding a complete lack of dissection manuals, anatomy charts, or even useful papers about the species you are dissecting, you decide you are going to get a couple more specimens and make your own damn manuals.
We are doing dissections in my 12th grade biology class, and due to some administrative SNAFU and bureaucratic red tape, we couldn't order the dogfish specimens we wanted (the school is apparently not allowed to order direct from non-Thai companies, or I would have just contacted Carolina Biological myself), so my assistant teacher, clever guy that he is, bought 5 tawny nurse sharks (which are caught for food here) from a local fish market. We then preserved them and are now dissecting them. The dogfish dissection manual is OK for some of the basic internal anatomy and general external anatomy, but it is useless for skull and jaw structure and most of the muscles in the head and neck. All I could find for that kind of stuff was a paper on anatomy of feeding apparatuses of regular nurse sharks, which is close but still has some annoying differences.
So the plan is, after the semester ends (Thai school year ends in Feb.) I'm going to get a few more and document the hell out of dissecting them: pictures, diagram, dissection notes, and whatever information I can gather about these sharks. Hopefully I'll be able to compile it all together to give some open access detailed anatomy of these sharks. Expect a thread about it when the time comes.