Summary description from Wikipedia:

Oregoniidae in languages:

Japanese

ケセンガニ科

Korean

긴집게발게과

Swedish

trekantskrabbor

Images from inaturalist.org observations:

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©Mark Rosenstein, some rights reserved (CC-BY-NC-SA)

©melinagraace, some rights reserved (CC-BY-NC)

©Дэниал Юркевич, some rights reserved (CC-BY-NC)

©Leïla Brunner, some rights reserved (CC-BY)

©Leïla Brunner, some rights reserved (CC-BY)

©Leïla Brunner, some rights reserved (CC-BY)

©Sam R, some rights reserved (CC-BY-NC)

©Sam R, some rights reserved (CC-BY-NC)

©Sam R, some rights reserved (CC-BY-NC)

©Sam R, some rights reserved (CC-BY-NC)

Parent Taxon

• Decapoda

Sibling Taxa

• Epialtidae
• Inachidae
• Inachoididae
• Majidae
• Mithracidae
• Oregoniidae

Child Taxa

• Macroregonia
• Oregoniinae
• Pleistacanthinae

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