these two areas. Although revision of Reeds tri- lobite faunas from Burma is overdue, the brachi- opods from there compare with South China rather than North (Cocks and Zhan, 1988) Bur- mese trilobite faunas include Neseuretus (Ne- seuretinus) with a Gondwanan distribution ex- tending to temperate palaeolatitudes Latest Or- dovician sequence and faunas from the whole Sibumasu terrane are also like those of South China.