Amphiplecta acrostoma

Classification: rads_cenozoic -> Plagiacanthidae -> Lophophaenidae -> Amphiplecta -> Amphiplecta acrostoma
Sister taxa: A. acrostoma, A. amphistoma, A. cylindrocephala, A. satoshii, A. tripleura, A. sp.


Citation: Amphiplecta acrostoma Haeckel 1887
Rank: species
Basionym: Amphiplecta acrostoma
Taxonomic discussion: Haeckel 1887

Catalog entries: Amphiplecta acrostoma

Original description: Cephalis subspherical, spiny, with distinct collar stricture on the base, its apical opening central, surrounded by a coronal of six to nine divergent denticulate spines. Length of the two joints = 5: 6, breadth = 4:15. Thorax flatly conical, armed with denticulate spines. Meshes of both joints irregular, polygonal, twice to six times as broad as the bars. Basal mouth armed with longer, divergent, denticulate spines.

Cephalis 50µm long, 40µm broad; thorax 60µm long, 150µm broad.
Remarks on original description: Haeckel includes a second figure, fig. 10a, on pl.97, but does not mention it in the figure description or text.


Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Notes: N: Neogene J: Haeckel 1887 ; RW_age: [presumably Quaternary though some forms reported from this station appear to be Tertiary]
Last occurrence (top): Extant Data source: Lazarus et al. 2015 - "R age group"
First occurrence (base): within Quaternary Period (0.00-2.59Ma, base in Gelasian stage). Data source: Lazarus et al. 2015 - "R age group"

Plot of occurrence data:


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


Amphiplecta acrostoma compiled by the radiolaria@mikrotax project team viewed: 17-5-2021

Taxon Search:
Advanced Search

Short stable page link: Go to to create a permanent copy of this page - citation notes

Comments (0)

No comments yet on this page. Please do add comments if you spot any problems, or have information to share

Add Comment

* Required information
Captcha Image
Powered by Commentics