Proetide trilobites from the Cystoid Limestone (Ashgill) of NW Spain, and the suprageneric classification of related forms

Few trilobites of the Order Proetida have been reported from the Ordovician»Selenopeltis Province«. Herein four species from the Ashgill Cystoid Limestone of the eastern Iberian Chains, NW Spain, are described and assigned to the generaRadnoria, Harpidella, Panarchaeogonus and Rorringtonia. Two species, Radnoria carlsi and Rorringtonia lenis, are new, and the others are described under open nomenclature. In the appendix, classification of Proetida belonging to the Aulacopleuridae, Brachymetopidae and the new family Rorringtoniidae is discussed, and all are included in the superfamily Aulacopleuracea.