02a0010708;0-8137-2211-X;¥122.25;20011205d1987 ekmy0engy01;eng;a z 000yy;r;Ashgillian-Eifelian (latest Ordovician through early middle Devonian) as an example;Wang Yu ... et al;Colorado;Geological Society of America;1987;100 p., 1 p. of plate;ill.;Special Paper;Geological Society of America;211;2001b;aSpecial Paper ; fGeological Society of America ; v211;a543;Wang;Yu;101;443783;P;206.4;Sp3;v211 ; r¥122.25;a04;b1;cP