†family Williriedellidae Dumitrica 1970 (radiolarian)

Radiolaria - Nassellaria - Williriedellidae

Parent taxon: Nassellaria according to W. Kiessling 1995

Sister taxa: Abnormisphaera, Acanthodesmiacea, Acerahedrina, Acerocanium, Acidnomelos, Acotripus, Acropyramididae, Adelocyrtis, Afens, Amphipyndacea, Anisicyrtiidae, Anthocyrtis, Anthocyrtoma, Archaeodictyomitracea, Archaeosemantidae, Archeeucyrtis, Archicorys, Archocyrtiidae, Ares, Artoperina, Artostrobium, Ayrtonius, Barbutidae, Bathrocalpis, Belleza, Botryocella, Calyptocoryphe, Canelonus, Canesium, Carpocanarium, Carterwhalenia, Cephalopyramis, Cladospyris, Clathrospyris, Collicyrtidium, Conarchnium, Confiroma, Corocalyptra, Cortiniscus, Crubidae, Cryptocapsa, Cryptocephalus, Cryptopora, Cuniculiformiidae, Cyrtocalpis, Cyrtocapsella, Cyrtoidea, Deflandrecyrtiidae, Dendrocircus, Diacanthocapsidae, Dictyophimus, Dictyopodium, Dictyospyris, Dipodospyris, Distylocapsa, Eucyrtidiacea, Eucyrtidiellidae, Eucyrtis, Ewingella, Farcidae, Favosyringium, Foremanellinidae, Foremania, Globolaxtorum, Glycobtrys, Haliphormis, Heloringulum, Helotholus, Hexapylocapsidae, Hilarisiregidae, Homeoarchicorys, Hsuuidae, Japonocampe, Kassina, Krempelinella, Kuppelella, Laxuscingula, Lithobotrys, Lithocampana, Lithocarpium, Lithomitra, Lithornithium, Lithostrobus, Livarellidae, Lophoconus, Lophocorys, Lophophaenidae, Lychnodictyum, Minutusolla, Monosera, Morosyringium, Mostlericyrtium, Muellericyrtiidae, Nabolellidae, Nabollellidae, Nebespecha, Neosciadiocapsidae, Nephrospyris, Octotympanum, Perseus, Phaenocalpis, Phaenoscenium, Phormocampe, Phormospyris, Plagiacanthidae, Plagionium, Plagoniidae, Platycryphalus, Plectopyramis, Podocoronis, Popofskyellidae, Poulpidae, Pseudosaturniformidae, Pterocodon, Quarkus, Quasipetosus, Religa, Ruesticyrtiidae, Salpingocapsa, Sanfilippoellidae, Schadelfussdlerus, Senelella, Sethocapsidae, Sethocyrtis, Sethodiscus, Sethoperidae, Sethopilium, Siphocampium, Solidea, Sphaerospyris, Spinomersinellidae, Spirocampe, Spongomelissa, Spyrida, Stampfliellidae, Stephaniscus, Stichocampe, Stichocapsidae, Stichophormis, Stylocryptocapsa, Syringium, Telacapsulidae, Tertoniidae, Tetraphormis, Tetrarrhabda, Tetraspinocyrtiidae, Theocapsa, Theoconus, Theocorys, Theophormis, Tholospyris, Trexus, Triacartus, Triassocampidae, Triassocyrtium, Tricolocampe, Tricolocapsa, Tripedurnulidae, Tripilidium, Tripocalpis, Tripocyrtis, Tripodiscium, Tripodonium, Tripodospyris, Tripophaenoscenium, Trissopilium, Ultranaporidae, Urocyrtis, Windalia, Xipha, Xiphothecaellidae

Subtaxa: Cryptamphorella Excentropylomma Helvetocapsa Hemicryptocapsa Hiscocapsa Holocryptocanium Holocryptocapsa Immersothorax Kozurium Minocapsa Praewilliriedellum Striatojaponocapsa Trisyringium Williriedellum Zhamoidellum

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Type: Williriedellum

Ecology: passively mobile planktonic omnivore

Distribution:

• Cretaceous of Antarctica (1 collection), Azerbaijan (6), Canada (1: Nunavut), the Czech Republic (1), Denmark (3), Germany (2), Greece (3), Italy (51), Japan (2), Malaysia (13), Oman (16), the Philippines (1), Poland (16), the Russian Federation (7), Slovakia (2), Trinidad and Tobago (2), Turkey (2), United States (24: California), United States Minor Outlying Islands (1)

• Jurassic to Cretaceous of China (1), Oman (1)

• Jurassic of Albania (23), Antarctica (16), Armenia (2), China (1), Germany (34), Greece (8), Hungary (2), Indonesia (1), Italy (28), Japan (31), New Zealand (1), Oman (10), the Philippines (5), Romania (6), the Russian Federation (20), Slovakia (12), Slovenia (3), Spain (5), Switzerland (3), United States (30: California, Oregon)

Total: 397 collections including 887 occurrences

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