†phylum Problematica

Parent taxon: Metazoa according to J. J. Sepkoski 2002

Sister taxa: Bilateria, Diploblastica, Homoblastica, Hyolithelminthida, Vertebrosa, Westgardia, Placozoa, Triploblastica, Neuralia, Deuteronectanebos, Trichoplax, Calcispongea, Tentaculitoidea, Lazaichnus, Siphonoconcha, Triradialomorpha, Rhizostomites, Porifera, Bilateralomorpha, Muricassis, Mesozoa, Silicispongea, Epitheliozoa, Euradiculata, Proarticulata, Rangeomorpha, Kimberellomorpha, Pentaradialomorpha, Yunnanomedusa, Petalonamae, Megathrix, Odontogriphidae, Silicea, Stellostomites, Subtilicyathus, Gephyrea, Parazoa, Cnidaria, Goettingenia, Xidazoon, Cambrorhytium, Mawsonites, Spygoria, Oligoopilionus, Nectocarididae, Sentularia, Eodiorygma, Kullingia, Arboreomorpha, Vetulicolia, Protolyellia

Subtaxa: Acanthoclava Acanthosphaera Acidotocarena Acutitheca Ainiktozoon Aksuglobulus Amiskwia Amoebinella Anabaritidae Ancienta Andobolus Anzalia Archaeooides Archaeopetasus Archaeotremaria Artimyctella Ascosyrinx Aurisella Baccanella Bacinella Bactryllium Banffia Beltania Biconulites Bicornifera Bija Bioistodina Bovicornellum Cambrocassis Cambroclavida Cambrogeorgina Caveacus Cestites Chalasiocranos Clavitella Coeloscleritophora Coleolidae Coleoloida Coleoloides Cribricyathea Cristatodus Cupithecidae Cyclogeorgina Cyrtochites Dentachites Dimorphoconus Dinocardia Dinomischus Dolichomocelypha Eldoniidae Emeithella Emmonsaspis Enchostoma Endosacculus Eocucumaria Eoescharopora Etacystis Facivermis Fensiangia Flabetheca Fomitchella Fusuconcharium Gochtia Harttites Henaniodus Hensonella Heosomocelypha Heterosculpotheca Huangshandongella Huishea Huizenodus Humboldtochaeta Indocera Isnella Jiangshanodus Kazakhstanotubulus Kiehnensus Koksodus Korilacus Labyrinthotuba Labyrinthus Ladinella Lenaella Libodiscus Lidaconus Lombardia Lonchosaccus Lukatiella Mabiania Mamillodus Marcusodictyon Megasphaera Meghystrichosphaeridium Melopetasus Microancientia Micropylepora Microschedia Miratheca Mobergellidae Mongoliacus Mongolitesta Nevadatubulus Nicolarites Ningqiangsclerites Niphadus Oesia Onuphionella Opabinia Paiutiida Palaeobotryllus Paleocenosphaera Pararenicola Paropsonemidae Parvulonoda Phyllochiton Platydendron Plexoramea Plicatolingula Plinthokonion Pollingeria Polysiphonidia Poratites Porocystis Portalia Pragmotheca Primaconulariella Problematikum Protoarenicola Protobolus Protomelission Protopterygotheca Psamathopalass Pteromidae Pterpmus Ptiloncodus Punctatus Pyrgites Quadratapora Quadrorites Radiaxialia Radiomura Redkinia Redoubtia Resegia Rhagnura Rhombocorniculum Rotadiscidae Rugatotheca Sabelliditida Sagittitheca Salanacus Scambocris Scissotheca Selenoplax Seletinicus Shamovella Shetlandia Shinteinella Solenotia Sphenopteron Spinoceras Spiralella Stefania Stictoconus Stoibostrombidae Taitia Tayshira Tchangsichiton Tintinnoidella Tommotitubulus Tridia Triplicatella Tubigeorgina Tubulella Tullimonstrum Tumulduria Tunudiscus Tuvinia Volborthellida Wushicites Yangtzesclerites Yuliunia Yunnanodus

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