Subfamily Necronectinae Glaessner 1928 (swimming crab)

Malacostraca - Decapoda - Portunidae

Parent taxon: Portunidae according to C. E. Schweitzer et al. 2010

Sister taxa: Atoportuninae, Callinectes, Caphyrinae, Carcinides, Carupinae, Enoplonotus, Euphylax, Lupocyclinae, Neptunus, Podophthalminae, Portuninae, Proterocarcinus, Psammocarcininae, Rakosia, Thalamitinae

Subtaxa: Necronectes Scylla

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Ecology: carnivore

Distribution:

• Quaternary of Australia (1 collection)

• Pliocene of Japan (2)

• Neogene of Mexico (2), Poland (1)

• Miocene of Brazil (4), the Dominican Republic (1), Hungary (1), Japan (2), Mexico (1), Panama (2), Saudi Arabia (1), Trinidad and Tobago (1), United States (2: Maryland, Puerto Rico)

• Oligocene to Miocene of Mexico (1), United States (1: Florida)

• Oligocene of Antigua and Barbuda (2), Japan (1), Mexico (1), United States (6: Florida, Mississippi, Puerto Rico)

Total: 33 collections including 37 occurrences

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