Usually
solitary, exceptionally colonial, radiolarians without initial spicule,
with simple central capsule, which is everywhere perforated by numerous
fine pores. Skeleton ellipsoidal, disc-shaped, lenticular, latticed or
spongy, disposed concentrically, spirally or irregularly. First shell usually
homeopolar.
Select
a genus name : AcaeniotyleActinomma Advena Alievium Amphibrachium Amphisphaera Amphisphaerissa Amphisphaeridium Amphistylus Amuria Angulobracchia Arachnosphaera Archaeocenosphaera Archaeohagiastrum Archaeospongoprunum Archaeotriastrum Beatricea Belowea Bernoullius Betraccium Bistarkum Bivallupus Bolena Callela Cantalum Capnodoce Capnuchosphaera Carinacyclia Carposphaera Cavabracchia Cavaspongia Cavidiscus Cecrops Cromyechinus Cromyomma Crucella Dantze Danubea Dicroa Didactylum Ditrabs Druppatractus Dumitricaia Echinommura Ellipsostylus Ellipsoxiphus Emiluvia Fontinella Gibberospongus Glomeropyle Gomberellus Gorgansium Hagiastrum Halesium Helena Heliodiscus Heliosestarium Heliosoma Heliosomura Hexalonchilla Hexasphaera Higumastra Homoeoparonaella Icrioma Lampasa Lanubus Leugeo Levileugeo Liassobetraccium Lithatractona Lithatractus Loffa Loupanus Mesovallupus Monotrabs Natraglia Nolita Noviforemanella Novitripus Oertlispongus Ommatogramma Orbiculiforma Orbiculopylorum Pachyonchus Pantanellium Paronaella Parvicuspis Parvivacca Patulibracchium Pentaporobrachia Pentapylonium Pentaspongodiscus Peritiviator Pessagnobrachia Pessagnollum Phantum Phaseliforma Plafkerium Pobum Praeconocaryomma Protopsium Protovallupus Protoxiphotractus Prunobrachium Pseudoaulophacus Pseudocrucella Pseudohagiastrum Pseudopantanellium Pyramispongia Relindella Risella Saldorfus Scutispongus Sontonaella Sophia Sphaerostylus Spongopallium Spongoprunum Spongurus Steigerispongus Stylatractus Stylosphaera Suttonium Tamonella Tappanella Teichertus Tetraditryma Tetratrabs Thaisphaera Thurstonia Trillus Trimanicula Trimiduca Triplanospongos Tripocyclia Tritrabs Udalia Vallupus Veghicyclia Wilvemia Xiphatractium Xiphatractus Xiphatractylis Xiphosphaera Zanola Zartus and click
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