Abstract
The first Silurian trilobites to be described from Alaska are of late Llandovery (Telychian) age. They occur with original cuticle intact in a white biosparite. Seven species have been identified, includingParacybantyx occidentalisn. sp.,Ligiscus smithin. sp.,Calymenes.l. aff.C. iladonLane and Siveter, 1991,Scotoharpesaff.S. raaschiNorford, 1973,Scharyiasp., a cheirurine belonging to eitherRadiurusRamsköld, 1983, orProtocerauroidesChatterton and Perry, 1984, and an undetermined warburgelline. The fauna has close affinity to those described from similar lithologies in the Telychian of North Greenland. Machaeridians occurring with the trilobites includeTurrilepassp.,Compacoleussp., andLepidocoleuscf.L. britannicusWithers, 1926.
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