Hairy stone crabs are a false crab species that probably evolved from the same squat lobster ancestor of porcelain crabs.

Scientists Somero and Stillman study how a minimal temperature change could affect the intertidal porcelain crab. In California tide pools, similar changes are being witnessed as southern species ...

Carcinized clades are: sponge crabs, "higher" true crabs, porcelain crabs, hairy stone crabs, and king crabs. Decarcinized clade shown is the frog crabs. Disclaimer: AAAS and EurekAlert!