Editing Porcelain crab (section)

{{Short description|Family of crustaceans}}
{{Automatic taxobox
| name = Porcelain crabs
| fossil_range = {{fossil range|Tithonian|Recent}}
| image = South eastern Pacific species of Petrolisthes, Allopetrolisthes, and Liopetrolisthes (Porcellanidae).jpg
| image_caption = Southeastern Pacific species of ''Petrolisthes'', ''Allopetrolisthes'' and ''Liopetrolisthes''
| taxon = Porcellanidae
| authority = [[Adrian Hardy Haworth|Haworth]], 1825
| subdivision_ranks = Genera
| subdivision = See text
}}

'''Porcelain crabs''' are [[Decapoda|decapod]] [[crustacean]]s in the widespread family '''Porcellanidae''', which superficially resemble true [[crab]]s. They have flattened bodies as an adaptation for living in rock crevices. They are delicate, readily losing limbs when attacked, and use their large claws for maintaining territories. They first appeared in the [[Tithonian]] age of the [[Late Jurassic]] epoch, 145–152 million years ago.