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
@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
Goto (2004) (https://t.co/fgVxjehG8X) describes several fossil chlamydoselachid teeth from Japan ranging from the Turonian to Maastrichtian, as well as Miocene records; five indeterminate but distinct Chlamydoselachus species were 'coined' here
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