A–F: Diaphus angulatus Ohe & Araki, 1973; A–C: SMF PO 101.130, Inabacho, Tsu City, Katada Formation, level ML 2305; D–E: SMF PO 101.131, Fuchu machi, Toyama City, Higashibessho Formation, level H 20; G–N: Diaphus epipedus sp. nov.; G–I: holotype, SMF PO 101.132, Tsuyama City, Takakura Formation, level MS 15; K–J: paratype, SMF PO 101.133, Tsuyama City, Takakura Formation, level MS 15; L–N: paratype, SMF PO 101.134, Yatsuo, Toyama City, Higashibessho Formation, level H 21; O–T: Diaphus metopoclampoides Steurbaut, 1983, SMF PO 101.135, Tsuyama City, Takakura Formation level MS 06, f; U–AB: Diaphus watatsumi sp. nov., Tsuyama City, Takakura Formation; U–X: holotype, SMF PO 101.136, level MS 52; Y–AB: paratypes, SMF PO 101.137, levels gh, j; AC–AE: Diaphus sp.1, col. Tsuchiya, Ichishi Group.