What is "caryosyntrips"

Caryosyntrips is an extinct genus of anomalocaridid which existed in Canada, during the middle Cambrian. Caryosyntrips is known only from a handful of 12-segmented appendages, which resemble nut-crackers, recovered from the Burgess Shale Formation. It was first named by Allison C. Daley, Graham E. Budd in 2010 and the type species is Caryosyntrips serratus.