Protozoa - Spumellaria - Tritrabidae
Parent taxon: Spumellaria according to P. De Wever et al. 2001
See also Zügel 1997
Sister taxa: Acaeniotylidae, Acanthopyle, Adiyamanium, Allocyrtium, Amphicyclia, Amphisphaera, Amphistylus, Anakrusidae, Angulobracchiidae, Antygoporidae, Archaeospongoprunidae, Artiscus, Aspiculumidae, Astractura, Astrococcus, Astrocyclia, Astromma, Astrosestrum, Astrosphaeridae, Beatricea, Bernoulliidae, Bipylospongia, Bolenidae, Callosphaera, Caltrop, Cannartidium, Cannartiscus, Cannartus, Capnuchosphaeridae, Caspiaza, Caucasicus, Cavaspongiidae, Cenodiscaella, Cenolarcopyle, Coccodiscidae, Coccolarcus, Conocaryommidae, Conosphaera, Cromyodruppocarpus, Cromyostaurolonche, Cryptolarancium, Cubotholonium, Cyrtiphaeronemium, Dactyliosphaeridae, Devoniglansus, Dicoccura, Dictyastrum, Didactylum, Diplactura, Distriactis, Domuzdagiidae, Doryconthidium, Dorydictyum, Dorydiscus, Dorydruppa, Dorylonchidium, Doryphacus, Doryplegma, Dorysphaera, Druppastylus, Druppocarpus, Druppula, Echinomma, Ellipsidium, Ellipsostylus, Emiluviidae, Entactiniacae, Entapiidae, Fontinella, Foremanella, Formanhelena, Franklinia, Futobari, Glomeropyle, Hagiastridae, Halidictyum, Haliomma, Haplopolus, Haplotaeniatumidae, Heliocladus, Heliodiscidae, Heliosoma, Heterosestrum, Hexacladus, Hexacromyum, Hexadoras, Hexaloncharium, Hexaporobrachiidae, Hexapylomellidae, Hexastylarium, Hymenactura, Kalimnasphaera, Kreyzstella, Labyrinthia, Lampasa, Larcidium, Larnacalpis, Larnacantha, Larnacillidae, Liosphaera, Lithapium, Lithatractus, Melittosphaera, Mendacastridae, Miropylidae, Natraglia, Ommatocampe, Ommatodiscus, Ommatospyris, Orbiculopylorum, Orosphaeridae, Orostaurs, Palaeotetraphyle, Pantanelliidae, Parabeothuka, Parasaturnalidae, Paratriassoastridae, Paratriassoastrum, Parvivaccidae, Patulibracchiidae, Pentactinocapus, Pentactura, Pentalastrum, Pentasphaera, Phacotriactis, Phantum, Phorticum, Phyletripes, Pipetta, Pipettaria, Plegmosphaera, Plussatispila, Praeconocaryommidae, Primaritripus, Prunocarpus, Pseudoacanthocircidae, Pseudoacanthosphaera, Pseudoaulophacidae, Pseudosaturnalis, Pyloniacea, Pyloniidae, Pyramispongiidae, Quasibeothuka, Rhodosphaera, Rhopalodictyum, Saturnaliacea, Schizodiscus, Sethodiscinus, Sethostaurus, Spironium, Spongasteriscus, Spongiomma, Spongoacanthus, Spongobrachium, Spongocoelia, Spongodiscacea, Spongodiscidae, Spongolonche, Spongopalliidae, Spongophacus, Spongosphaeradiscus, Sponguracea, Sponguridae, Srakaeosphaera, Stauracontium, Staurancistra, Staurococcura, Staurocromyum, Staurocyclia, Staurodictya, Staurodoras, Stauroplegma, Staurostylus, Stomatodiscus, Streblacantha, Stylosphaeridae, Stylostaurus, Styptosphaera, Suttoniidae, Tauridastrum, Tetrapylonium, Tetrarectangulum, Tetrasphaera, Tetriastrum, Thalassicola, Theodiscus, Tholomura, Tholoniidae, Tipperella, Trigonocyclia, Triplococcus, Tripodictya, Trochodiscus, Veghicycliidae, Vinassaspongus, Vitorfidae, Xiphodictya, Xiphostaurus, Zadrappolus, Zhuangodiscus, Zonodiscus
Subtaxa: Archaeotritrabs Ditrabs Neoparonaella Tritrabs
Ecology: passively mobile planktonic omnivore
Distribution:
• Cretaceous of Austria (11 collections), Germany (2), Italy (63), Oman (19), the Philippines (1), the Russian Federation (1)
• Jurassic to Cretaceous of Austria (3), Germany (1), Italy (3), Oman (1)
• Jurassic of Antarctica (18), Austria (21), China (1), Germany (8), Greece (2), India (2), Italy (48), Japan (11), Malaysia (1), Mexico (15), Oman (18), the Philippines (1), Romania (6), the Russian Federation (14), Slovakia (15), Spain (4), Switzerland (3), United States (18: Alaska, California, Oregon)
• Triassic of Hungary (1), Oman (1)
Total: 313 collections including 637 occurrences