arrayname: original 

Amphipternis clava

Taxonomy

Catalog entries: Lithocampe clava

Original description: (6-articul.), clavata laevis, capitulo parvo subgloboso inermi integerrimo. Artic. II primo angustior cum 3 sequentibus sensim dilatatis, latior quam longus. Artic. VI urceolato-ovatus. 4 medii articuli cellularum parvarum series transversas 2-4 gerunt. Artic. VI in anteriore parte minorum cellularum series transversas 5, in posteriore parte valde increscentes ibique sparsas gerit. In observato specimine postica pars non integra videbatur.
[6-segmented, clavate, smooth, with cephalis small, subglobose, unarmed and entire. Second segment narrower than the first, with the three following gradually dilate, broader than long. Sixth segment urceolate-ovate. The four median segments have 2-4 transverse rows of small pores. Sixth segment with five transverse rows of pores in the anterior part, posteriorly the pores greatly increasing in size and everywhere sparse. In the observed specimen, the posterior part did not seem to be whole. (Translated from Latin by E.M.R. and W.R.R.)]

Length 150µm, of cephalis 15µm of last segment 75µm. 4 small pores in 23µm.
Remarks on original description: [New name Amphipternis clava (Ehrenberg) Foreman 1973a]

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Paleogene Period (23.03-66.04Ma, top in Chattian stage). Data source: Lazarus et al. 2015 - "P age group"
First occurrence (base): within Paleogene Period (23.03-66.04Ma, base in Danian stage). Data source: Lazarus et al. 2015 - "P age group"

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
• Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
• Taxon plotted: Amphipternis clava, synonyms included - Amphipternis clava;
• See also space-time plot :: Samples map :: Parent: Amphipternis

Amphipternis clava compiled by the radiolaria@mikrotax project team viewed: 24-3-2025 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/radiolaria/index.php?id=203076 Go to Archive.is to create a permanent copy of this page - citation notes

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