Genus Oldroydia W. H. Dall, 1894
(7-0-5-4-0-4-1-5-0-0-0-0-0)
Ref. Abbott, 1974 p 393
Kaas & Van Belle, 1980percrassus W. H. Dall [T]
(7-0-5-4-0-4-1-5-0-1-0-0-0)
Oldroyd's Thick Chiton
Size 0.6" long
Ref. Abbott, 1974 p 393
Kaas & Van Belle, 1980