Euchitonia

Daughter taxa (time control age-window is: 0-800Ma)
				Euchitonia elegans neptune records:
				Euchitonia elegans-furcata group neptune records: 42
				Euchitonia sp. neptune records: 35

Taxonomy

Catalog entries: Euchitonia

Original description: Polycystinum compositum e Calodictyis. Testula silicea plana spongioso-cellulosa, lobato-stellata. Cellulae disci spongiaceae concentricae. Membrana cellulosa radios ad apices usque coniungens.

Ab affini Histiastro fossili Antillarum membrana totos radios involvente differt, quae in illo prope discum solummodo observatur. Praeterea aculei validi Histiastri triactidis et quaternarii radios terminant, quae in Euchitonia desiderantur.


Translated description: Composite polycystin of the Calodictya. Small test, siliceous, flat, spongy-porous, lobate-stellate. Pores of the spongy disc concentric. A porous membrane connects the radii all the way to their apices.

Differs from the related fossil Histiastrum from the Antilles, which has a membrane only near the disc, in having a membrane surrounding all the radii. Besides, the radii of Histiastrum triactis and H. quaternaria terminate in strong spines, which are lacking in Euchitonia. (Translated from Latin by E.M.R. and W.R.R.)]
Remarks on original description: [Euchitonia Ehrenberg, 1860a [775:767] is a Nomen Nudum]

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant. Data source: Total of ranges of the species in this database
First occurrence (base): within Neogene Period (2.59-23.03Ma, base in Aquitanian stage). Data source: Total of ranges of species in this database

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
• Neptune data: This is a higher taxon page so Neptune data is not plotted. See also: customisable plot Parent: Spongodiscidae inc sed

Euchitonia compiled by the radiolaria@mikrotax project team viewed: 12-10-2024 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/radiolaria/index.php?id=204052 Go to Archive.is to create a permanent copy of this page - citation notes

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