Chesnonia Iredale [T.] & Whitley [G. P.] 1969:45 Fem. Brachyopsis verrucosus Lockington 1880. Type by being a replacement name. Replacement for Occa Jordan & Evermann 1898, preoccupied by Occa Chesnon 1835 in Aves -- (see Bailey & Gruchy 1970 [ref. 6508]). •Synonym of Occella Jordan & Hubbs 1925 -- (Lindberg & Krasyukova 1987:303 [ref. 15964], Sheiko 1993:76 [ref. 21227]). •Valid as Chesnonia Iredale & Whitley 1969 -- (Kanayama 1991:97 [ref. 19261], Mecklenburg et al. 2002:527 [ref. 25968], Sheiko & Mecklenburg 2004:16 [ref. 27591], Pietsch & Orr 2015:48 [ref. 34694]). Current status: Valid as Chesnonia Iredale & Whitley 1969. Agonidae: Brachyopsinae.