Alternative spelling: Palaeogryra
Parent taxon: Bivalvia according to M. Foote et al. 2024
See also Koppka 2015
Sister taxa: Acanomyophoria, Acturellina, Afghanodesma, Amosius, Ampezzania, Amphikoilinae, Arhouriellidae, Asiphonidae, Asthenodonta, Autobranchia, Aviculomya, Bakewellia, Bathyspinulinae, Bleta, Bodmania, Burriera, Carnidia, Cirravidae, Claughtonia, Conchodus, Cruciella, Cryptodonta, Ctenolima, Delia, Dissonia, Edon, Elliptoidea, Ensia, Eubivalvia, Euburnopecten, Euprotobranchia, Fogiella, Geinitzia, Gibboconcha, Gosselettia, Guebhardia, Hemisterias, Isofilibranchia, Laurskiidae, Libyaconchus, Lipodonta, Lux, Manankovia, Megagrypha, Modiolopsis praerupta, Neotaxodonta, Onkogrypha, Ostrea compta, Ostreavicula, Palaeostrea, Paradoxia, Paraviculidae, Paullia, Phyllonia, Pleureterites, Praecardiomya, Praevicula, Productae, Protobranchia, Psammoconcha, Pteriomorpha, Ptychoplasma, Rebusum, Reniella, Rostrotortus, Septocardiidae, Solen (Solecurtus) ellipticus, Solen (Solecurtus) planulatus, Sollea, Spirodomidae, Stagnestesta, Taeniodon, Tatella, Telistrophis, Trachidomia, Coelonotidae, Praeanomalodontata, Imperia, Eoasmussia, Teleodesmacea, Prionodesmacea, Aviculidae, Phaenomya, Gariidae, Lyra, Corbidae, Solenomyidae, Plicatulacea, Anomalodesmacea
Subtaxa: Nanogyra (Palaeogyra) reniformis Nanogyra (Palaeogyra) virgula
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Quaternary of United States (8: Florida, North Carolina collections)
• Pliocene of United States (15: Florida, North Carolina, Virginia)
• Jurassic of France (3), Germany (22), Mexico (3), Poland (2), Portugal (4), Saudi Arabia (11), Switzerland (4), the United Kingdom (8)
Total: 80 collections including 82 occurrences