Dakoticancroidea

Dakoticancroidea is a superfamily of fossil crabs, containing six species in five genera, divided into two families. The family Dakoticancridae is only known from North American rocks of Late Cretaceous age, while the single species in the Ibericancridae was found in Spain.
 * Dakoticancridae Rathbun, 1917
 * Avitelmessus grapsoideus Rathbun, 1923
 * Dakoticancer australis Rathbun, 1926
 * Dakoticancer overana Rathbun, 1917
 * Seorsus wadei Bishop, 1988
 * Tetracarcinus subquadrata Weller, 1905
 * Ibericancridae Artal, Guinot, Van Bakel & Castillo, 2008
 * Ibericancer sanchoi Artal, Guinot, Van Bakel & Castillo, 2008