Psychospyris

Daughter taxa (time control age-window is: 0-800Ma)
				Psychospyris grandis neptune records:
				Psychospyris intermedia neptune records: 3
				Psychospyris parva neptune records: 2
				Psychospyris sp. neptune records:

Taxonomy

Catalog entries: Psychospyris

Original description: This genus comprises the members of the lineage extending from Psychospyris parva through P. intermedia to P. grandis. There is a strong tendency for shell development to be concentrated in the frontal plane, and for the shells therefore to be discoidal in general form. The outer part of this disc usually con-sists of two lattice-plates joined by bars which give the appearance of a radially chambered structure, and the inner part (corresponding to the cephalic cavity or more) hollow. The primary and secondary lateral bars are well developed, and there is no basal ring in P parva, though it may be present in the other species. Below the collar pores, and marked off from the re-mainder of the disc by the primary lateral bars and obliquely downwardly directed bars arising from them, a type of ""pocket"". There are commonly two prominent bars arising from the top of the D-shaped sagittal ring (in the position denoted as ""q"" by Petrushevskaya, 1969), and extending obliquely up-ward to the spongy zone at the top of the skeleton.

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): at top of Neogene Period (100% up, 2.6Ma, in Piacenzian stage). 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: Acanthodesmiidae

Psychospyris compiled by the radiolaria@mikrotax project team viewed: 20-9-2024 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/radiolaria/index.php?id=205205 Go to Archive.is to create a permanent copy of this page - citation notes

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