Tridonioida
Superfamily
TRIGONIACEA
Genera
Anopisthodon
Aulacopleurum
Families of TRIGONIACEA
LYRODESMATIDAE
MYOPHORIIDAE
TRIGONIIDAE
TRIGONIOIDIDAE
Family
LYRODESMATIDAE
Genera
Brachilyrodesma
Lyrodesma
Lyrodesmas
Lyronucula
Noradonta
Pseudaxinus
Family
MYOPHORIIDAE
Genera
Atalantia
Axinopsis
Costatona
Costatoria
Cryptina
Curtonotus
Cyrtonotus
Cytherodon
Elegantinia
Eoschizodus
Flabelliphoria
Gruenewaldia
Hefteria
Heminajas
Heteroschizodus
Kefersteinia
Leptodomella
Leptodomus
Leviconcha
Liotrigonia
Lyriomyophoria
Middalaya
Middalya
Miophoria
Miserinotus
Myophoria
Neoschizodus
Niobe
Okunominetania
Okunominetiana
Paraschizodus
Praemyophoria
Prisconaia
Protoschizodon
Protoschizodus
Rhenania
Rhomboschizodus
Schizodon
Schizodus
Toechomya
Trigomyophoria
Trigonella
Trigonellites
Tripiphora
Tropiphora
Vestitocostata
Family
SCAPHELLINIDAE
Genus
Scaphellina
Family
TRIGONIIDAE
Genera
Acanthotrigonia
Actinotrigonia
Agonisca
Anditrigonia
Apiotrigonia
Arabitrigonia
Asiatotrigonia
Austrotrigonia
Awadia
Buchotrigonia
Callitrigonia
Clavitrigonia
Clavotrigonia
Climacotrigonia
Columbitrigonia
Eotrigonia
Eselaevitrigonia
Frenquelliella
Geratrigonia
Guineana
Haidaia
Heterotrigonia
Hijitrigonia
Ibotrigonia
Indotrigonia
Iotrigonia
Jaworskiella
Korobkovitrigonia
Kumatrigonia
Laevitrigonia
Latitrigonia
Leptotrigonia
Levantotrigonia
Linitrigonia
Linotrigonia
Liriodon
Litschkovitrigonia
Lyridon
Lyriodon
Lyrodon
Lyrodon
Lyroschizodus
Malagasitrigonia
Maoritrigonia
Mediterraneotrigonia
Megatrigonia
Mesotrigonia
Metacanthotrigonia
Microtrigonia
Minetrigonia
Myophorella
Myophorigonia
Myophoriogonia
Neotrigonia
Nipponitrigonia
Notoscabrotrigonia
Nototrigonia
Oistotrigonia
Opisthotrigonia
Orthotrigonia
Pacitrigonia
Packardella
Perugonia
Pisotrigonia
Pleurotrigonia
Praegonia
Procostatatoria
Promyophorella
Prorotrigonia
Prosogyrotrigonia
Pseuomyophorella
Psilotrigonia
Pterotrigonia
Ptilotrigonia
Quadratotrigonia
Quoiecchia
Rinetrigonia
Rutitrigonia
Scabrotrigonia
Scaphitrigon
Scaphogonia
Scaphotrigonia
Setotrigonia
Sphenotrigonia
Steinmanaea
Steinmanella
Steinmannella
Syrotrigonia
Transitrigonia
Trigella
Trigon
Trigonia
Trigonigenus
Vaugonia
Yaadia
Yeharella
Zaletrigonia
Family
TRIGONIOIDIDAE
Genera
Blanfordinaia
Buginella
Didymotrigonioides
Diversitrigonioides
Gobiella
Hoffetrigonia
Indobaphia
Kumamotoa
Laotrigonioides
Mekongiconcha
Mekongonaia
Monginella
Neotrigonioides
Paratrigonioides
Plicatella
Plicatotrigonioides
Sainschandia
Songhuanaia
Tpigonioides
Trigonioides
Wakinoa
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