The Trilobites of the Chair of Kildare Limestone (Upper Ordovician) of Eastern Ireland

Abstract

The trilobites from the Chair of Kildare Limestone, Ashgill Series, of eastern Ireland are described in two parts. Part 1 includes 13 families, 26 genera (1 new), and 35 species or subspecies (6 new). New taxa include Carrickiinae subfam. nov., Glaphurella gen. nov. (type species Cyphaspis? Harknessi Reed, (1896), Tretaspis calcaria sp. nov., Sphaerexochus britannicus sp. nov., Heliomera (Heliomeroides) novissima sp. nov., Carrickia athleta sp. nov., Tiresias insculptus cornutus subsp. nov. and Holotrachelus punctillosus cilldaricus subsp. nov. A neotype is chosen for Atractopyge verrucosa (Dalman) and the species is redescribed. The remaining trilobites and the age of the fauna will be discussed in Part 2 of the monograph.