Grabau A. W. & Shimer H. W. (1909). North American Index Fossils 1. <i>New York pp. 853</i>:
page(s): 603 [details]
source of synonymy
Bouchet P., Rocroi J.P., Hausdorf B., Kaim A., Kano Y., Nützel A., Parkhaev P., Schrödl M. & Strong E.E. (2017). Revised classification, nomenclator and typification of gastropod and monoplacophoran families. <em>Malacologia.</em> 61(1-2): 1-526.
page(s): 332 [details] Available for editors [request]
From editor or global species database
Taxonomy The Paleozoic family Palaeacmaeidae has long been classified in the Monoplacophora. However, Webers & Yochelson (1999, J. Paleont. 73: 598-607) have showed that the Cambrian type species of Palaeacmaea is not a mollusc, but perhaps a Cnidaria. For lack of a better assignment, the name Palaeacmaeidae is entered in WoRMS in Monoplacophora, as a receptacle for the Paleozoic genus Parmophorella, under which some Recent species have been originally described. [P. Bouchet, 6 May 2011] [details]