Psittacosaurus fossil preserves uropatagia, convergent with Sharovipteryx
Here’s an observation
of convergence you won’t see anywhere else.
It’s well known that pterosaurs,
their ancestors and cousins, like Sharovipteryx (Fig 1) had uropatagia (= extradermal membranes behind each hind limb).
References
Mayr G, Peters SD, Plodowski G and Vogel O 2002. Bristle-like integumentary structures at the tail of the horned dinosaur Psittacosaurus. Naturwissenschaften. 89 (8): 361–365.
Osborn HF 1923. Two Lower Cretaceous dinosaurs from Mongolia. American Museum Novitates 95: 1–10.
You H−L, Tanou K and Dodson P 2008. New data on cranial anatomy of the ceratopsian dinosaur Psittacosaurus major. Acta Palaeontologica Polonica 53 (2): 183–196.
Source: https://pterosaurheresies.wordpress.com/2022/05/28/psittacosaurus-fossil-preserves-uropatagia-convergent-with-sharovipteryx/
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