Mieridduryn

Mieridduryn () is a genus of dinocaridid (a group of extinct arthropods) that lived during the Middle Ordovician of what is now the United Kingdom. This animal was described in 2022 based on a single fossil found in Castle Bank, a Burgess shale-typelagerstätte located in the country of Wales. Mierridduryn's affinities (relation to other arthropods) are somewhat uncertain, with two opinions currently being favored.