Family Hapalogastridae Brandt 1850 (decapod)
Malacostraca - Decapoda - Hapalogastridae
Parent taxon: Lithodoidea according to C.E. Schweitzer et al. 2023
Sister taxon: Lithodidae
Subtaxa: Hapalogaster
Type: Hapalogaster
Ecology: epifaunal carnivore
Distribution:
• Quaternary of Mexico (1 collection), United States (2: Califormia, Washington)
Total: 3 collections each including a single occurrence