Citation: Archicircus duodenus Haeckel 1887Rank: speciesDescribed on page(s) : p.942Type repository: No information givenFamily (traditional): Trissocyclidae
Original Description Gate square or rhombic. Ring rhombic, with three prominent edges and twelve stout and straight pyramidal spines, about as long as the radius of the gate. In each of the four corners are three divergent spines, arising from the three edges of each two meeting rods.
Diameter of the gate 0.08; thickness of the ring 0.012. Editors' Notes There was no illustration of this species in Haeckel (1887) Haeckel listed Archicircus duodenus under the subgeneric name Archistephus, but did not include the subgeneric name in the species name.
Haeckel, E (1887a). Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873-1876. 18: 1-1803. gsO
Archicircus duodenus compiled by the radiolaria@mikrotax project teamviewed: 5-6-2023