Family Macrocheiridae Dana 1851 (spider crab)
Malacostraca - Decapoda - Macrocheiridae
Parent taxon: Majoidea according to F. A. Ferratges et al. 2023
Sister taxa: Epialtidae, Hymenosomidae, Inachidae, Inachoididae, Majidae, Oregoniidae, Priscinachidae
Subtaxa: Macrocheira
Type: Macrocheira
Ecology: epifaunal carnivore
Distribution:
• Pliocene of Japan (1 collection)
• Miocene of Japan (2), United States (1: Washington)
• Oligocene of Canada (1: British Colombia), United States (6: Washington)
• Eocene to Oligocene of United States (1: Washington)
• Eocene of Spain (1), United States (2: Oregon, Washington)
Total: 15 collections each including a single occurrence