Bull. not. Hist. Mus. Land. (Geol.) 54(2): 109-130 f^tg 2j^^rpyi^l|998 



H I STORYMUSCUM 



Caradoc brachiopods from the Shan Stages, .IS NOV 1998 

 Burma (Myanmar) [0^^ 



L.R.M. COCKS £, 



Department of Palaeontology, The Natural History Museum, Cromwell Road, London SW7 5BD 



ZHAN REN-BIN 



Nanjing Institute of Geology and Palaeontology, Academia Sinica, Chi-Ming-Ssu, Nanjing 210008, People's 

 Republic of China 



CONTENTS 



Synopsis 109 



Introduction 110 



Brachiopod fauna of the Naungkangyi Group and equivalents 1 10 



Age of the fauna 1 1 1 



Faunal associations 112 



Palaeogeographical analysis 1 12 



Systematic palaeontology 113 



Superfamily Linguloidea Menke, 1828 1 13 



Palaeoglossa? sp 113 



Superfamily Orthoidea Woodward. 1852 1 14 



Plaesiomys taungtalensis (Reed, 1936) 1 14 



Nicolella sylvatica (Reed, 1936) 1 14 



Nicolella sp 1 16 



Saucrorthis irravadica (Reed, 1906) 1 16 



Skenidioides sp 118 



Superfamily Dalmanelloidea Schuchert. 1913 1 18 



Onniella chaungzonensis (Reed, 1906) 1 18 



Superfamily Clitambonitoidea Winchell & Schuchert, 1893 119 



Indet. clitambonitid 1 19 



Superfamily Plectambonitoidea Jones, 1928 120 



Leptellina (Leptellina) minor sp. nov 120 



Bekkerella subcrateroides (Reed. 1906) 122 



Ishimia subdeltoidea (Reed. 1906) 123 



Ptychoglyptus? shanensis Reed, 1932 123 



Superfamily Strophomenoidea King, 1846 125 



Bellimurina (Bellimurina)? sp 125 



Dirafinesquina globosa gen. et sp. nov 125 



Indet. leptaenines 126 



Glyptomena sp 126 



Superfamily Porambonitoidea Davidson. 1853 126 



Indet. syntrophopsid 126 



Porambonites spp 128 



Superfamily Lissatrypoidea Twenhofel, 1914 128 



Protozyga? haydeni Reed. 1936 128 



Cyclospira sp 128 



Acknowledgements 128 



References 128 



Appendix 130 



SYNOPSIS.. The brachiopod fauna from the Naungkangyi Group and its equivalents in the Shan States. Burma (Myanmar) is 

 described and reviewed, partly from new collections and also from the publications of Reed in the early half of this century. It 

 consists of 37 taxa within 31 genera, of which Dirafinesquina (Family Rafinesquinidae) is a new genus, and Dirafinesquina 

 globosa and Leptellina (Leptellina) minor are new species. The fauna is of Late Ordovician (Caradoc) age. Affinity analysis 

 between this fauna and other contemporary faunas from South China. North China. Kazakhstan, Altai. Wales. New South Wales 

 and British Columbia shows that the Burmese fauna is most comparable with that from South China, and to a lesser extent North 

 China, and very different from New South Wales and British Columbia. This indicates that the Shan-Thai (Sibumasu) palaeoplate. 

 upon which the Shan States were situated during the Ordovician. was close to the South China palaeoplate. 



© The Natural History Museum. 1998 



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