On the occurrence of Middle Cambrian Trilobites in the Khobdo Region (Western Mongolia)
Abstract
Odkrycie trylobitów środkowego kambru w regionie Kobdo (Mongolia zachodnia)
Six members have been distinguished in the geosynclinal formation occurring in the Khobdo region, Western Mongolia: 1 — greenstone schists, 2 — quartzite conglomerates and sandstones, 3 — diabase tuffs, 4 — siliceous tufogenic schists, 5 — limestones, 6 — diabase tuffs and diabases. Trilobites of the familiae Paradoxididae and Solenopleuridae, typical of the Atlantic province, and characteristic of the Early Middle Cambrian, were found in the fourth member.
Six members have been distinguished in the geosynclinal formation occurring in the Khobdo region, Western Mongolia: 1 — greenstone schists, 2 — quartzite conglomerates and sandstones, 3 — diabase tuffs, 4 — siliceous tufogenic schists, 5 — limestones, 6 — diabase tuffs and diabases. Trilobites of the familiae Paradoxididae and Solenopleuridae, typical of the Atlantic province, and characteristic of the Early Middle Cambrian, were found in the fourth member.