Heyyy im a professional nerd and im in vet school currently, and i had an opportunity to dissect an indo pacific finless porpoise, so if you could, can you tell me some cool stuff about porpoise anatomy? :)
Hello! I'm so sorry about the very delayed response, I only sporadically check this blog these days. Hope vet school is going well!
So you actually have more hands-on experience with porpoise anatomy than I do, as I have never worked with these guys (living or deceased) before! That must have been a super educational experience.
Unfortunately there are no textbooks (at least that I could find) strictly on porpoise anatomy, but here are a few resources to start with:
Porpoises.org has an amazing research library to delve through, with over 1000 peer-reviewed entries on everything porpoise, including anatomy! Did you know harbor porpoises have a documented directional asymmetry favoring their right pectoral flipper? This could mean they're "right-flippered!"
The Anatomy of Dolphins textbooks by Cozzi, Huggenberger, and Oelschläger are probably your best bet for an in-depth survey of odotocete anatomy, which includes but is not limited to porpoises.
Ridgway and Harrison's Handbook of Marine Mammals is iconic. The original volumes are out of print, but they contain incredible anatomy references for virtually every species of marine mammal, including the porpoises. There is a more up to date version edited by Thomas Jefferson (not to be confused with the third US President).
Finally, for a blast from the past, there's "Phocæna, or, The Anatomy of a Porpess, Dissected at Gresham Colledge: With a Præliminary Discourse Concerning Anatomy, and a Natural History of Animals," originally published in 1680 and one of the first anatomical texts on porpoises! You can read it for free here.
Hope that helps!