As promised, another CT slice to ponder! Mystery Dissection images will be back; I want to collect some more cool photos though. Otherwise it will turn into too much “mystery hindlimb muscle of the week”. I welcome “guest posts” of Mystery Dissections if someone wants to try to stump the audience! Anyway, on with the show… This one is not so easy, but not impossible by any means, either. Tell me what you can about this mysterious object!