Anomalacantha dentata

Sub-taxa & variants (time control age-window is: 0-800Ma)
				Anomalacantha dentata eocenica neptune records:

Taxonomy

Catalog entries: Heteracantha dentata

Original description: Poren trichterförmig, kreisrund, hex. begrenzt. Balkenbreite gleich dem Porendurchmesser. Hauptstachel mit vier bis fünf Quirlen unverzweigter Aeste. Hauptstacheln vier-bis fünfmal so lang als der Schalendurchmesser. Nebenstacheln sehr zart, ein- bis zweimal dichotom verzweigt, so lang als der Radius der Schales. | Durchmesser der Schale 0,06, der Poren 0,01; Balkenbreite 0,01; Länge de Hauptstacheln 0, 24, Breite 0,015; Länge der Nebenstacheln 0,03. | Fundort: Vald.: Atlantik Stat. 32 oo.

Phylogeny: The question of the transition of A. dentata dentata from A. dentata eocenica remains open. In the Atlantic Ocean and the Norwegian Sea, during the Eocene, many forms close to A. dentata eocenica, were differentiated, but they differ by slightly larger and more variable shells, a larger number of pores and less developed radial spines. It is possible that the genus Anomalacantha and other close Macosphaeridae took shape at that time.
Remarks on original description: dbl - changed dupl. eocenica record to dentata species record. 11.3.19

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
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:

• 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: Anomalacantha dentata, synonyms included - Anomalacantha dentata; Heteracantha dentata;
• See also space-time plot :: Samples map :: Parent: Anomalacantha

Anomalacantha dentata compiled by the radiolaria@mikrotax project team viewed: 21-6-2025 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/radiolaria/index.php?id=203136 Go to Archive.is to create a permanent copy of this page - citation notes

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