Daughter taxa (time control age-window is: 0-800Ma) | Granddaughter taxa | ||||
Lophophaenidae Two segemented plagiacanthids with well developed cephalis and thorax, and generally some external expression of primary spicules - either as lateral external spines or prolonged in thorax as ribs/feet. Cephalis generally relatively large, thorax termination irregular and lacking any special structures. neptune records: | Amphiplecta Antarctissa Arachnocalpis Arachnocorallium Arachnocorys Archipera Archiperidium Archipilium Botryopera Ceratocyrtis Cryptogyrus Dictyocephalus Dictyocryphalus Entepipedus Gondwanaria Lipmanella Lithocampana Lithomelissa Lophophaena Marimoum Mitrocalpis Pelagomanes Periarachnium Peromelissa Phormacantha Plagiacanthidae inc sed castanoides Plectacantha Pseudocubus Pseudodictyophimus Pteroscenium Steganocubus Tripodocyrtis Trisulcus | ||||
Plagiacanthidae (ss) Plagiacanthids without distinct lattice wall, consisting of the primary spicules with various branches or loose meshwork. neptune records: | |||||
Plagiacanthidae inc sed neptune records: | |||||
Sethoperidae One or two segmented forms with external spines usually connected by panels or arches of lattice wall. neptune records: | Acanthobotrys Archiscenium Callimitra Chitascenium Cladoscenium Clathrocanium Clathrocorys Clathromitra Euscenium Pteropilium Spongomelissa Tripilidium clavipes Tripocalpis Tripodiscinus Verticillata | ||||
Sethophormididae Wide conical or nearly flat 2 segmented forms with relatively large but inconspicuous highly flattened cephalis. neptune records: | |||||
Theopiliidae Wide conical 2 segmented forms with a small simple subspherical cephalis. External cephalic spines usually cylindrical in cross section, thorax termination usually without a peristome or skirt. neptune records: |
Catalog entries: Plagiacanthidae
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:
Plagiacanthidae compiled by the radiolaria@mikrotax project team viewed: 11-12-2024
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