Cryptogyrus

Daughter taxa (time control age-window is: 0-800Ma)
				Cryptogyrus dubius neptune records:
				Cryptogyrus trachylobus neptune records:

Taxonomy

Catalog entries: Cryptogyrus

Original description: Diagnosis.一Test consisting of exclusively large eucephalis, with or without loosely defined ante- and postcephalic lattice shell, and having a distinct ring structure in the skeleton. PR is thick, circular in cross section. DR is composed of four arches which are convex upward and forms the lower margin of a large eucephalic chamber. Y/X is much larger than 1 . A is short, usually not forming external prolongation. A' absent. D and two L relatively thin. D' and L' may be distinct, l' and V' missing. Two l" and V" are short. When one views from the basal side, two l" always lie in a plane perpendicular to the sagittal plane. V is commonly present, but rarely absent as an intraspecific variation. In the latter cases, PR and DR are connected by five bars consisting of A, two l" and two pillars developed on the ventral side (Figure 19-4b). There are no additional connector bars between PR and additional lattice wall.
Remarks. - This genus differs from Botryopera in lacking A', two l' and V' and having only four connector bars between PR and DR in typical specimens. Further remarks are given in the discussion of the type species.

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 Late Pleistocene Sub-Epoch (0.01-0.13Ma, base in Tarantian 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.
• See also: customisable plot Parent: Lophophaenidae

Primary source for this page: Sugiyama 1993

Cryptogyrus compiled by the radiolaria@mikrotax project team viewed: 21-7-2026 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/radiolaria/index.php?id=206188 Go to Archive.is to create a permanent copy of this page - citation notes

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