@farmerman,
or a non-sterile room but one with steel tables presumably sanitized pre dissection? I'm not for what is going on in the photo, but I'm trying to open my head to that is the way of it of the animal butchering in many places. Best mode for dissection, or regular butchering, no, not to me, being used to sterile lab work.
As I said earlier in the thread, if you're going to dissect to show anatomy to the interested, do it in a closed space and, would add, space with a teaching theater rather like in the history of anatomy in the first place, nowadays done with associated hygiene regimes.)
I see dissection for teaching anatomy, even in high school biology, much more so comparative anatomy, as different from animal butchering for food, which this scene was. Whole animal dissection for teaching, in my view of the term, takes quite a long time.
Interesting re the paleontologist's comment.