Anaulaciulus trapezoidus (Wang, 1955)

Fusiulus trapezoidus Wang, 1955: 14: fig.1–3.

Fusiulus trapezoidus — Wang 1958: 344; 1963: 91–92.

Anaulaciulus trapezoidus — Enghoff 1986: 124; Korsós 1996: 39; 2004: 15.

Remarks. Originally described quite inadequately from “Hsin-Tien, Taipei” (Wang 1955), this species was later recorded first from “Taipei” (Wang 1958) and then from Dah Ren Jen (Wang 1963). Topotype material from the Taipei region is necessary to revise A. trapezoidus . Wang’s types, claimed to have been deposited in the Taiwan Museum, can be presumed to be lost.