Anthocyrtoma

Daughter taxa (time control age-window is: 0-800Ma)
				Anthocyrtoma sp. neptune records: 211

Taxonomy

Catalog entries: Anthocyrtoma

Original description: Sethophormida (vel Dicyrtida multiradiata aperta) without thoracic ribs, with six terminal feet around the mouth. Cephalis free, with an apical horn.

The genus Anthocyrtoma and the four following genera form together the peculiar group of Carpocanida, comprising all those Sethophormida in which the original thoracic ribs are lost, and only the terminal feet remain. Anthocyrtoma is the simplest form of this group, possessing only six terminal feet, three primary perradial, and three alternating, secondary, interradial. It may be directly derived either from Lychnocanium by interpolation of three interradial feet, or from Hexaspyris by loss of the sagittal ring.
Remarks on original description:

Type species A. serrulata Ehr 1876 from Barbados figured in Tanimura monograph, tho incorrectly as Anthocyrtis s.  Other Anthocyrtoma reports in lit for Paleocene e.g. Nishimura 1992.  Classified by Nish. as Theoperidae, seems correct. -dbl

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant. Data source: Total of range of species in this database
First occurrence (base): at top of No known fossil record modern (100% up, 0Ma, in "Holocene" stage). Data source: Total of range 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: Theoperidae

Anthocyrtoma compiled by the radiolaria@mikrotax project team viewed: 30-4-2025 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/bforams/index.php?id=203175 Go to Archive.is to create a permanent copy of this page - citation notes

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