kidneyshell

Etymology

From kidney + shell.

kidneyshell means any of various freshwater mussels in the genus Ptychobranchus. Lexicurio rates it Sui generis — a strength score of 86 out of 100.

noun

Any of various freshwater mussels in the genus Ptychobranchus.“Canada's species at highest risk — caribou, spotted owls and the freshwater kidneyshell mussel — remain under threat because the federal government is failing to use its own laws to protect them, says a coalition of environmental groups.”