8h ultradian rhythms in dentin growth independent of circadian clock. More evidence to challenge circadian primacy.. #circadian #ultradian #chronobiology #dentin https://t.co/V4HyFXgrIU

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