EXUVIUM is validvalid

the molted covering of an animal [n EXUVIA, EXUVIAE] : EXUVIAL [adj]

39,230 of 196,601 in NWL2023·also valid in CSW24

(Latin) the moulted covering of an animal [n EXUVIA]

84,831 of 280,887 in CSW24·also valid in NWL2023