[1][2][3] The genus Cricoidoscelosus is now considered to be a junior synonym.

[2] The species was first named by Van Straelen in 1928 as Astacus licenti.

In 1999, the species was assigned to the new genus Palaeocambarus, and was placed in the family Cambaridae.

In the same publication, the genus and species Cricoidoscelosus aethus was described, and was placed into the monotypic family Cricoidoscelosidae.

[2] In 2023, a re-evalutation of crayfish from the Yixian Formation found that Cricoidoscelosus was a synonym of Palaeocambarus and that Palaeocambarus could be confidently placed in Cambaroididae, which includes modern East Asian crayfish (Cambaroides).