Parent taxon: Raninoida according to C. E. Schweitzer et al. 2018
See also Karasawa et al. 2014, Luque et al. 2017, Schweitzer 2025, Schweitzer et al. 2016 and Schweitzer et al. 2016
Sister taxa: Palaeocorystoidea, Raninoidea
Subtaxa: Araripecarcinus Camarocarcinidae Cenomanocarcinidae Necrocarcinidae Orithopsidae Paranecrocarcinidae
Type: Necrocarcinus
Ecology: semi-infaunal carnivore
Distribution:
• Eocene of Belgium (1 collection), the United Kingdom (2), United States (4: California, New Jersey, Oregon)
• Paleocene of Denmark (2), France (1), Greenland (2), Poland (1), United States (4: North Dakota)
• Paleogene of Belgium (1)
• Cretaceous of Afghanistan (1), Antarctica (6), Brazil (2), Canada (4: British Columbia, Manitoba), Colombia (10), Czechia (4), France (14), Germany (2), Japan (1), Lebanon (3), Mexico (5), Morocco (3), Mozambique (2), the Netherlands (4), Nigeria (2), the Russian Federation (11), Spain (4), the United Kingdom (5), United States (40: Delaware, Mississippi, Montana, New Jersey, New Mexico, North Dakota, Oklahoma, Oregon, South Dakota, Texas, Wyoming)
Total: 141 collections including 163 occurrences