†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, Auroraella, Beekmanoceras, Bellerophontida, Bicuerda, Brachycerithium, Briardia, Bucardites, Buccinites, Bulimella, Bulimulidae, Bulimus, Capulus sellardsi, Cavolinioidea, Chartrionella, Chippewaella, Chlathrus, Chrysodomidae, Chuchleconus, Cithna, Cocculiniformia, Cyclostoma, Dextrobranchia, Dicathais, Dicosmus, Doliidae, Elmira, Eogastropoda, Euthyneura, Fruiticicoiidae, Gadinidae, Galeodea schencki, Galericulus, Globulitopa, Gordenella, Gryphellina, 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, Neritites, Notodelphinula, Opisthobranchia, Orthogastropoda, Oxychilus, Pectinibranchia, Peraubium, Phorus, Pitonnellus, Platyostomella, Platystoma, Plectopyloidea, Plicatusidae, Polygyridae, Pragoserpulinidae, Prasinidae, Prosobranchia, Pseudobrochidium, Pseudotylostoma, Ptenoglossa, Pteronotus, Pteropoda, Pulmonata, Pupillacea, Pythia, Rhytidopilidae, Rotellina, Scalariidae, Serpulopsis, Siphonaliidae, Sorbeoconcha, Spiraxidae, Spirgvaleia, Stramonita petrosa, Streptoneura, Stuorilda, Suprazonalia, Taeniodomus, Thatcheriidae, Tirolthilda, Tornatella, Tortifusus, Toxonema, Tripartella, Trochiletes, Trochonematoidea, Trochopsis, Trochotremaria, Trochulus, Urocoptidae, Zeminolia, Zlichovia

Subtaxa: Opisthonema

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Ecology: epifaunal

Distribution:

• Oligocene of Romania (1 collection)

• Ordovician of China (1)

Total: 2 collections each including a single occurrence

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