Cambarus robustus (Big water crayfish) - Michigan Natural Features

GISD

Changes in the distribution of Michigan crayfishes and the influence of invasive rusty crayfish (Faxonius rusticus) on native crayfish substrate associations

Secrets of the Lawn Lobster Chimneys! – Oakland County Blog

Zoogeography, taxonomy, and conservation of West Virginia's Ohio River floodplain crayfishes (Decapoda, Cambaridae). - Abstract - Europe PMC

Cambarus P. robustus

Michigan Smallmouth Alliance

Cambarus hi-res stock photography and images - Page 2 - Alamy

PDF) Lacunicambarus chimera: A new species of burrowing crayfish (Decapoda: Cambaridae) from Illinois, Indiana, Kentucky, and Tennessee

Cambarus P. robustus

Wild species 2010: chapter 21