 barbadense img3146.jpg)
rad_org Lophocyrtis (Lophocyrtis (Q) barbadense img3146.jpg
 barbadense img3146.jpg)
rad_org Lophocyrtis (Lophocyrtis (Q) barbadense img3146.jpg
1873 Pterocanium barbadense - Ehrenberg p. 254, pl. 17, fig. 6
1998 Lophocyrtis (Lophocyrtis ?) barbadense - Sanfilippo and Caulet p. 8, pl.4, figs. 9,10
From Suzuki Paleotax db:
1874 Pterocanium barbadense n. sp. Ehrenberg p. 254
1876 Pterocanium barbadense Ehrenberg Ehrenberg p. 82-83, pl. 17, fig. 6
1882 Pterocyrtidium barbadense (Ehrenberg) Bütschli pl. 33, fig. 29
1887 Pterocorys (Pterocyrtidium) barbadensis (Ehrenberg) Haeckel p. 1318
1972 Eucyrtidiidae gen. sp. aff. Pterocyrtidius barbadense (Ehrenberg) [sic] Petrushevskaya & Kozlova pl. 22, fig. 10
1972 Pterocyrtidium barbadense (Ehrenberg) group Petrushevskaya & Kozlova p. 552, pl. 27, figs. 18, 19
1975 Pterocyrtidium barbadense (Ehrenberg) Ling p. 729, pl. 10, fig. 17
1998 Lophocyrtis (Lophocyrtis?) barbadense (Ehrenberg) [sensu emend.] Sanfilippo & Caulet p. 8-9, pl. 4, figs. 9, 10
2009 Pterocanium barbadense Ehrenberg [Ehrenberg Collection] Ogane et al. pl. 1, fig. 3
Catalog entries: Pterocanium barbadense
x: P. barbadenseOriginal description: [Smooth, three-segmented; cephalis globose, porous, with an acute lateral horn. Second segment globose, swollen, with a strong lateral spine directed backward, and surface pores small, in oblique rows. Third segment very narrow, cylindrical, anteriorly similarly porous, posteriorly membraneous, the p&sterior margin subdentate, broken. Total length without spine 78 µ, of cephalis 15 µ of second and third segments each 31 µ of frontal horn 15 µ. Maximum width of second segment 41 µ. Approx. 4 pores in 23 µ. (Translated from Latin by E.M.R. and W.R.R.)]
source unknown (recorded on Radiolaria.org is Ehrenberg 1873, which is not correct) - Pterocanium barbadense
Published descriptions
Description: Three-segmented small theoperid with three thoracic spines. Cephalis subspherical with a few small subcircular pores, or a pitted surface, bearing a sharply pointed short apical horn. The apical horn is as long as the cephalis in Middle Eocene to Early Oligocene forms with three reduced arches. In Late Oligocene forms the horn is reduced to a short thorn with a hole at its base. The apical spine is partially free, attached to the cephalic wall by short apophyses. Two mitral arches depart from the apical spine close to the top of the cephalis and merge with the cephalic wall. The vertical spine is at an angle with the downwardly inclined median bar and does not protrude outside the cephalic wall. Strong primary lateral and dorsal spines are prolonged into the thoracic wall, protruding outside as short spines. Thorax subspherical with small irregularly to quincuncially arranged pores that vary somewhat in size. Abdomen inverted truncate conical with an undifferentiated termination. Lumbar stricture gently marked on the external contour, and with an internal constricting septa1 band. Abdominal pores similar in size to those of the thorax, commonly irregularly distributed.
Similar species
Geological Range:
Last occurrence (top): within Late Eocene Sub-Epoch (33.89-37.75Ma, top in Priabonian stage). Data source:
First occurrence (base): within Late Eocene Sub-Epoch (33.89-37.75Ma, base in Priabonian stage). Data source:
Plot of occurrence data:
Sanfilippo, A. & Caulet, J. (1998). Taxonomy and evolution of Paleogene Antarctic and tropical Lophocyrtid radiolarians. Micropaleontology. 44(1): 1-43. gs Missing or ambiguous references: Ehrenberg 1873; References:
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Pterocyrtidium barbadense compiled by the radiolaria@mikrotax project team viewed: 9-2-2026
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