Listed as accepted in Adrain, 2011 and elsewhere, but appears to be preoccupied by Atopidae Laporte, 1834 (Coleoptera); the latter has historically been replaced by Dascillidae Guérin-Méneville, 1843 on the basis of synonymy of the type genus Atopa Paykull, 1799 with Dascillus Latreille, 1796, but is still an available name, making Atopidae Hupé, 1953 a junior homonym, though apparently unreplaced.
Adrain, J. M. (2011). Class Trilobita Walch, 1771. In: Zhang, Z.-Q. (Ed.) Animal biodiversity: An outline of higher-level classification and survey of taxonomic richness. <em>Zootaxa.</em> 3148: 104-109.