Steganocubus

Daughter taxa (time control age-window is: 0-800Ma)
				Steganocubus incrassatus neptune records:
				Steganocubus irregularis neptune records:
				Steganocubus lipus neptune records:
				Steganocubus sp. neptune records:
				Steganocubus subtilis neptune records:

Taxonomy

Catalog entries: Steganocubus

Original description:

Large cephalis enclosing internal skeleton. A, two l", V" relatively long. A', D, two L, two l' and V" commonly extending to the shell wall. They are, however, sometimes reduced or absent irregularly (Fig ures 10-4b ; 11-lb). l" usually lies in a bisectional position between D and L. D' and L' vestigial (Figure 10-ld) or completely absent. V missing. L-R and Ax variable in length. A few, short connector bars irregularly developed especially on the ventral side. They connect PR and the shell wall or DR. DR lies in a high position in the cephalis. Y/X is less than 1. Thorax may be present. Remarks.—This genus is distinguished from Pseudocubus externally by the presence of the shell wall, and internally by having stout and long A', D and V', and by lacking V completely. This genus was undoubtedly derived from Pseudocubus by direct acquisition of the shell wall on the skeleton, accompanied by a certain modification of the skeletal structure. It is, therefore, clear that the segment above DR corresponds not to the whole cephalis but to the upper part of the eucephalic lobe.

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): at top of (100% up, 0Ma, in "Holocene" stage). Data source: Total of ranges of the species in this database
First occurrence (base): within (-Ma, base in "Holocene" 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: Lophophaenidae

Steganocubus compiled by the radiolaria@mikrotax project team viewed: 25-6-2025 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/bforams/index.php?id=206203 Go to Archive.is to create a permanent copy of this page - citation notes

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