Citation: Archiperidium Haeckel 1881Taxonomic rank: genusBasionym: Archiperidium Haeckel 1882Type species: Peridium (Archiperidium) spinipes Haeckel 1887Taxonomic discussion: The genus Peridium (or Archiperidium, Prodromus, loc. cit.) and the two following nearly allied genera form together the small group of Archibursida, differing from the four preceding genera (the Euscenida) in the absence of an internal free columella. The three basal feet have therefore no direct connection with the apical horn. Peridium, the ancestral form of the Archibursida, may have originated either from Euscenium by reduction and loss of the columella, or directly from Tripospyris by loss of the sagittal ring and the longitudinal constriction.||[By referring back to p.429 of his Prodromus and stating above "Peridium or Archiperidium", Haeckel obviously means Peridium to be an emendation of the name Archiperidium, which is unjustified according to the ICZN (1961) art. 33a. Peridium is thus a junior objective synonym of Archiperidium Haeckel 1881a.||Description: The "two following nearly allied genera" refers to Archipera and Archibursa; the "four preceding genera" refers to Euscenium, Cladoscenium, Archiscenium, and Pteroscenium in Haeckel, 1887a.] npt family assignment dbl after De Wever 2001. Peridium listed as 'nomum dubium' in npt genera table. Type species designated by Campbell 1954.
Original description: Archiperida (vel Monocyrtida triradiata clausa) without internal columella, with an apical horn.
Description
Biogeography and Palaeobiology
Biostratigraphic distribution
Geological Range: Last occurrence (top): at top of Neogene Period (100% up, 2.6Ma, in Piacenzian stage). Data source: Total of ranges of the species in this database First occurrence (base): within Neogene Period (2.59-23.03Ma, base in Aquitanian stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested.
Campbell, A. S. (1954). Radiolaria. In, Moore, R. C (ed.) Treatise on Invertebrate Paleontology, Part D Protista 3. Protozoa (Chiefly Radiolaria and Tintinnina). D(3): 1-163. gs
Haeckel, E. (1882a). Entwurf eines Radiolarien-Systems auf Grund von Studien der Challenger-Radiolarien [Basis for a radiolarian classification from the study of Radiolaria of the Challenger collection]. Jenaische Zeitschrift für Naturwissenschaft. 15: 418-472. gsO
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 years 1873-1876. 18: 1-1803. gsO
Archiperidium compiled by the radiolaria@mikrotax project teamviewed: 22-7-2026
