References:
Haeckel, E (1887). 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 year 1873-1876, Zoology. 18: 1-1803. gs
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Current identification:
Original Description
Shell spiny, with deep collar stricture. Length of the three joints = 3: 9: 10, breadth = 4: 12: 16. Cephalis hemispherical, with a stout conical horn of the same length. Thorax campanulate, with regular, circular pores and conical spines, increasing in size towards the deep lumbar stricture. Abdomen truncate, conical, with twenty to thirty divergent, straight ribs, which are connected by four to six transverse rings, and prolonged into free conical feet of half the length. Therefore four to six transverse rings of regular, square pores occur.
Length of the three joints, a 30, b 90, c 100µm; breadth, a 40, b 120, c 160µm.
Editors' Notes
There was no illustration of this species in Haeckel (1887)
Haeckel listed Alacorys polyacantha under the subgeneric name Polyacorys, but did not include the subgeneric name in the species name.
Haeckel, E (1887). 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 year 1873-1876, Zoology. 18: 1-1803. gsReferences:
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Alacorys polyacantha compiled by the radiolaria@mikrotax project team viewed: 9-3-2021
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