Cyrtolagena aglaolampa

Classification: rads_cenozoic -> Theoperidae -> Cyrtolagena -> Cyrtolagena aglaolampa
Sister taxa: C. aglaolampa, C. laguncula, C. sp.


Citation: Cyrtolagena aglaolampa Takahashi 1991
Rank: species
Basionym: Cyrtopera aglaolampa
Taxonomic discussion: (Takahashi, 1982 p.255, pl.40, figs.7-8 as Cyrtopera); Nishimura & Yamauchi,1984; Weinheimer et al. (ODP 134 SR) p. 311, pl.1, fig.3

Catalog entries: Cyrtopera aglaolampa

Original description: Cephalis spherical with a conical stout apical horn 2-3 times its length and with very smal pores. There are 6-8 abdominal segments of equal length which gradually increase their width toward the last abdominal chamber. The chamber is ca. 4-6 times as wide as cephalc diameter. Constrictions between the segments are equal to or less than those in C. languncula. There are a few short spines on the thorax as well as on the basal side of the last chamber. Four to five abdominal ribs attached on the wall and extending out of the last chamber and become feet which are as long as the chamber's length and slightly curved inward. Pores circular and small in the thorax and gradually increase their size and become hexagonal toward the last chamber. The last chamber's pores are as wide as 2-3 times the thickness of interporous bars.


Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Neogene Period (2.59-23.03Ma, top in Piacenzian stage). Data source: Lazarus et al. 2015 - "N age group"
First occurrence (base): within Neogene Period (2.59-23.03Ma, base in Aquitanian stage). Data source: Lazarus et al. 2015 - "N age group"

Plot of occurrence data:


Takahashi, K. (1991). Radiolaria: Flux, ecology, and Taxonomy in the Pacific and Atlantic. Ocean Biocoenosis Series. 3: 1-301. gs

Weinheimer, A. L., A. Sanfilippo, A. & Riedel, W. R (1994). Radiolarians from Leg 134, Vanuatu Region, Southwestern Tropical Pacific. Proceedings of the Ocean Drilling Program, Scientific Results. 134: 309-317. gs


Cyrtolagena aglaolampa compiled by the radiolaria@mikrotax project team viewed: 12-4-2021

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