Late Silurian cephalopods from Langkawi, Malaysia, with peri-Gondwanan faunal affinity

Autor: Shuji Niko, Masatoshi Sone, Mohd Shafeea Leman
Rok vydání: 2017
Předmět:
Zdroj: Journal of Systematic Palaeontology. 16:595-610
ISSN: 1478-0941
1477-2019
DOI: 10.1080/14772019.2017.1316322
Popis: Nine species of late Pridoli (latest Silurian) orthocerid cephalopods are described from the Upper Setul Limestone of Pulau Langgun, Langkawi Islands, Malaysia. These are the orthoceratids Michelinoceras (Michelinoceras) cf. michelini (Barrande, 1866), Michelinoceras? sp., Kopaninoceras setulense sp. nov., Mimogeisonoceras? langgunense sp. nov., Kionoceras? sp. and Orthocycloceras sp.; the arionoceratids Arionoceras mahsuri sp. nov. and Caliceras mempelamense sp. nov.; and the geisonoceratid Murchisoniceras? sp. This is the first detailed record with taxonomic descriptions of Silurian cephalopods from Southeast Asia. The assemblage belongs to the newly defined Kopaninoceras Fauna that is interpreted to have been widely distributed along the northern (African to Asian) margin of Gondwana and around the Prototethys Ocean during the late Silurian. The Kopaninoceras Fauna includes a local assemblage from the Kurosegawa Belt of south-west Japan, which possibly represents its northernmost occurrence. The distri...
Databáze: OpenAIRE