Large adult - usually we only see juveniles on the reef.
Multiple conspicuous holes in the ground; one bleached carapace. This is near a creek and old farmland. I know there are species of prairie crawfish, and look forward to learning more.
I'm pretty sure it was already dead when I found it attached to an empty oyster shell. ID based on smooth pleotelson, and uropods extending past the pleotelson. The uropods were also slightly serrated but that can't be seen in the photos. See:
Malacostraca is the largest of the six classes of crustaceans, containing over 25,000 extant species, divided among 16 orders. Its members display a greater diversity of body forms than any other class of animals, and include crabs, lobsters, shrimp, krill, woodlice, scuds (Amphipoda), mantis shrimp and many other less familiar animals. They are abundant in all marine environments and have also colonised freshwater and terrestrial habitats. They are united by a common Bauplan, comprising 20 body...