Lepidozona mertensii, Merten's chiton, is a species of chiton found under intertidal rocks from northern Alaska to northern Mexico.
Lepidozona mertensii can grow to lengths of up to 5 cm. One of its distinguishing features is the presence of overlapping oval scales on the girdle, giving it a granular appearance. The girdle may also be banded with yellow and red, while the valves tend to be brown, cream, red, or even greenish-purple.
Female Merten's chitons lay their eggs in cases, which hatch into planktonic larvae called trochophores. These will metamorphose directly into young adults without a veliger stage.