The insect look like an armadillo then it opened up and has 18 legs.
with Lithobius variegatus.
A European Sowbug at Kettle Pond NWR.
Oniscidae is a family of woodlice, including the common woodlouse Oniscus asellus. Six genera are certainly placed in the family (Oniscus, Oroniscus, Phalloniscus, Rabdoniscus, Rodoniscus and Sardoniscus), with eight others included by some sources (Cerberoides, Diacara, Exalloniscus, Hanoniscus, Hiatoniscus, Hora, Krantzia and Tasmanoniscus).