Antithamnion elegans Berthold, 1882a: 516 (type locality: Golfo di Napoli, Italy).—P. Anand, 1943b: 22–24, figs. 14, 15.— Børgesen, 1952: 39–40.— S. Dixit, 1968: 20.— Shameel & J. Tanaka, 1992: 51.
Antithamnionella elegans (Berthold) J. Price & D. John in J. Price, D. John, & Lawson, 1986: 16.—R. Anderson & Stegenga, 1989: 302, 308.— Stegenga & Bolton, 1992: fig. 3, table I.
Taxonomic synonym:
Antithamnion breviramosum Dawson, 1949b: 14–15, figs. 28, 57 (`breviramosus') (type locality: near Avalon, Santa Catalina Island, California, U.S.A.).—Hackett, 1977: 13.
Antithamnionella breviramosa (Dawson) Wollaston in Womersley & Bailey, 1970: 322.—B. Subramanian, 1982: 83–85, figs. 1–7.— Untawale, Dhargalkar, & Agadi, 1983: [34].— Wollaston, 1984: 285.
INDIAN OCEAN DISTRIBUTION: India, Maldives, Mauritius, Pakistan, South Africa, Tanzania (Zanzibar).
Note: The synonymy was proposed by Cormaci & Furnari (1988). G. Kim & Lee (1990), however, found that Antithamnion breviramosum in Korea consistently has three whorl-branches on each axial cell rather than the variable number reported for Mediterranean A. elegans.