†family Opisthonematidae Yu 1976 (snail)

Gastropoda - Opisthonematidae

Parent taxon: Gastropoda according to P. Bouchet et al. 2005

Sister taxa: Acteonoidea, Admetidae, Alamirifica, Alectrionidae, Amphigastropoda, Archaeobranchia, Archaeogastropoda, Auroraella, Beekmanoceras, Bellerophontida, Bicuerda, Brachycerithium, Briardia, Bucardites, Buccinites, Bulimella, Bulimulidae, Bulimus, Cavolinioidea, Chartrionella, Chippewaella, Chlathrus, Chuchleconus, Cithna, Cocculiniformia, Conotrochus, Cyclostoma, Cyclostremella, Dextrobranchia, Dicathais, Dicosmus, Elmira, Eogastropoda, Euthyneura, Fruiticicoiidae, Galeodea schencki, Galericulus, Globulitopa, Gordenella, Hecatastoma, Helicarionoidea, Helicites, Helictes, Helminthoglyptidae, Holyneconcha, Hyalaea, Hypsogastropoda, Hyrcania, Isaea, Iteria, Juliidae, Liris, Lovonemetrida, Luoguella, Luoguispira, Lysechinus, Lysechinus incongruens, Mahajangina, Mathildidae, Microcochlis, Mitrularia, Neptuneidae, Neritaemorpha, Neritimorpha, Notodelphinula, Opisthobranchia, Orthogastropoda, Oxychilus, Pectinibranchia, Peraubium, Phorus, Pitonnellus, Platyostomella, Platystoma, Plectopyloidea, Plicatusidae, Polygyridae, Pragoserpulinidae, Prasinidae, Prosobranchia, Pseudobrochidium, Pseudotylostoma, Ptenoglossa, Pteronotus, Pteropoda, Pulmonata, Pupillacea, Rhytidopilidae, Rotellina, Sorbeoconcha, Spiraxidae, Spirgvaleia, Stramonita petrosa, Streptoneura, Stuorilda, Suprazonalia, Taeniodomus, Tectibranchia, Thatcheriidae, Tirolthilda, Tornatella, Tortifusus, Toxonema, Tripartella, Trochiletes, Trochonematoidea, Trochopsis, Trochotremaria, Trochulus, Urocoptidae, Zeminolia, Zlichovia

Subtaxa: Opisthonema

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Ecology: epifaunal

Distribution:

• Miocene of United States (1: California collection)

• Oligocene of Romania (1)

• Ordovician of China (1)

Total: 3 collections each including a single occurrence

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