@BatleChampion47 @darius_nau @bernvi @SharksEveryDayy That was an abstract by Kuga (1984). I wish I had known about it sooner because I would have mentioned it in my 2022 papers. https://t.co/lXdoXcXldD

The abstract doesn't state what characters were used, but there is a 1986 dissertation by the same author that I presume has the full analysis and character list. I will try to get my hands on a copy, but if anyone already has access let me know. https://t.co/ISyraqNT7I

Link: https://t.co/coqgkONzLo

@SharksEveryDayy Here's another southern porbeagle with more prominent dark ventral coloration. https://t.co/N7oX7wtT1m https://t.co/EAUYTum0Ye

@SilverStar3Magi This 1985 paper mentions that he was a collector of ammonites, so maybe there is some truth to it after all. https://t.co/4GSiujIPqd https://t.co/eC3IH9hdkL

@AshleyPalaeo This paper has figures of the branchial arches, dorsal fins, anal fin, and a small section of the vertebral column. https://t.co/4EnsNnkSM4

Basking shark ontogeny needs a lot more study. Of particular interest to me is the beak-like snout shape in really young individuals, which so far has only been documented in a single paper. This is a juvenile caught in Japan in 1977. https://t.co/7q82L8eA9l. https://t.co/VziE1uLqIO

@EmuLarge It happens around Japan with surprising frequency. Some have nearly 100 branching https://t.co/QZrxwbDq09