Daughter taxa (time control age-window is: 0-800Ma)![]() | ||||
![]() | Cromyechinus icosacanthus neptune records: | |||
![]() | Cromyechinus pycnopora neptune records: 11 | |||
Cromyechinus sp. neptune records: |
Catalog entries: Cromyechinus
Original description: 4e. Tribus: Cromyommida. Tetrasphaeria polyacantha (aculeis multis -- octo aut pluribus --, plerumque sine ordine dispersis).
A. aculeis simplicibus.
AII. spinis accessoriis inter aculeos.
Translated description: 4e. Tribe: Cromyommida. Tetrasphaeria with many spines (spines many, eight or more, usually scattered without definite arrangement).
A. With the spines simple.
AII. With secondary spines between the main spines. (Translated from Latin by E.M.R. and W.R.R.)]
Remarks on original description: [Synonymized with Actinomma Haeckel, by Petrushevskaya, 1975c, p.568]
Geological Range:
Last occurrence (top): Extant. Data source: Total of ranges of the species in this database
First occurrence (base): within Paleogene Period (23.03-66.04Ma, base in Danian stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
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Cromyechinus compiled by the radiolaria@mikrotax project team viewed: 22-5-2025
Short stable page link: https://mikrotax.org/bforams/index.php?id=203713 Go to Archive.is to create a permanent copy of this page - citation notes |