Plagiacanthidae

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 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:	Plagiacantha Plectagonidium Protoscenium Rhabdolithis Tetraplecta
				Plagiacanthidae inc sed neptune records:	Theopilium Tripilidium
				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:	Enneaphormis Genetrix Sethophormis Tetraphormis Velicucullus
				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:	Clathrocycloma Eucecryphalus Lampromitra

Taxonomy

Catalog entries: Plagiacanthidae [no catalog entry yet]

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 base of Danian Stage (0% up, 66Ma, in Danian 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. For the customisable plot option go to a genus page Parent: rads_cenozoic

Plagiacanthidae compiled by the radiolaria@mikrotax project team viewed: 4-6-2023 Taxon Search: Advanced Search AphiaID: 345898 Nomenclatural data on WoRMS Short stables page link: https://mikrotax.org/radiolaria/index.php?id=205037 Go to Archive.is to create a permanent copy of this page - citation notes

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