dodecaedron, Agonus Tilesius [W. G. von] 1813:439, Pl. 13 (figs. 1-3) [Mémoires de l'Académie Impériale des Sciences de Saint Pétersbourg v. 4 (for 1811); ref. 13413] Kamchatka, Russia. Lectotype: ZIN 5598 (134 mm specimen). Paralectotypes: MNHN 0000-7301 (1), ?NMW 11908 (1), ZIN 49534 [ex ZIN 5598] (1). Type catalog: Sheiko & Fedorov 2010:88 [ref. 38118]. Appeared as Agonus dodecaëdron, emendation is justified. Lectotype selected by Sheiko 1993:76 [ref. 21227]. •Valid as Occella dodecaedron (Tilesius 1813) -- (Kanayama in Masuda et al. 1984:331 [ref. 6441], Lindberg & Krasyukova 1987:304 [ref. 15964], Maeda & Amaoka 1988:73 [ref. 12616], Kanayama 1991:100 [ref. 19261], Sheiko 1993:76 [ref. 21227], Sokolovskaya et al. 1998:10 [ref. 24670], Busby 1998:74 [ref. 25508], Nakabo 2000:658 [ref. 25086], Sheiko & Fedorov 2000:30 [ref. 25650], Mecklenburg et al. 2002:536 [ref. 25968], Nakabo 2002:658 [ref. 26001], Choi et al. 2003:273, 581 [ref. 26218], Parin et al. 2002:S99 [ref. 28300], Fedorov et al. 2003:89 [ref. 27579], Sheiko & Mecklenburg 2004:17 [ref. 27591], Nelson et al. 2004:123 [ref. 27807], Love et al. 2005:97 [ref. 37547], Sheiko & Fedorov 2010:88 [ref. 38118], Mecklenburg et al. 2011:125 [ref. 31212], Page et al. 2013:126 [32708], Parin et al. 2014:290 [ref. 33547], Mecklenburg & Steinke 2015:164 [ref. 34033], Mecklenburg et al. 2016:114 [ref. 34440], Kells et al. 2016:202 [ref. 35888], Dyldin & Orlov 2017:70 [ref. 35138], Mecklenburg et al. 2018:256 [ref. 36370], Kim et al. 2020:107 [ref. 39118], Dyldin et al. 2021:72 [ref. 38804], Love et al. 2021:131 [ref. 39279], Dyldin & Orlov 2022:59 [ref. 38972], Page et al. 2023:188 [ref. 40505]). Current status: Valid as Occella dodecaedron (Tilesius 1813). Agonidae: Brachyopsinae. Distribution: North Pacific and adjacent Arctic: Chukchi Sea to Sea of Japan (Korea, Japan, Russia), Pacific coast of northern Japan and Gulf of Alaska. Habitat: brackish, marine.