This volume describes Ordovician faunas from West Thailand (Khanchanaburi, Tong Pha Phum, and Bo Noi regions), their meaning for biostratigraphy and palaeogeography (some notes on climate, ecology, and sedimentation) in the Burmese-Malayan geosyncline. It includes also worldwide important palaeontological reference works.
This paper concerns palaeontologists, stratigraphers, sedimentologists, and structural geologists interested in this long and ancient period of Earth history.

West Thailand in the Ordovician world (4 fig., 2 Tab.)
Trilobita from the Kanchanaburi Region (Arenig) and from
the Thong Pha Phum Region, Middle to Late Ordovician
(23 fig., 3 tab., 4 plates)
Ostracoda from Thong Pha Phum and Bo Noi Regions, West Thailand
(15 fig., 4 tables, 4 plates)
Cystoidea and Crinoidea from the Thong Pha Phum Region,
Middle to Early Late Ordovician (12 fig., 1 tab., 6 plates).