Harpactoxanthopsis quadrilobata () from the Eocene of Slovakia and Italy: the phenomenon of inverted images of fossil heterochelous crabs.

This short note provides details on a specimen of Harpactoxanthopsis quadrilobata (Desmarest, 1822) deposited in the Natural History Museum of Slovak National Museum in Bratislava which was figured in the monograph by Lőrenthey and Beurlen (1929). The phenomenon of inverted images of fossil heterochelous crabs in the literature published in the 19th century is documented on the example of H. quadrilobata from the Eocene of Italy.