TABULATOMORPHIC CORALS FROM THE EARLY DEVONIAN ARPISHMEBULAQ FORMATION AND THEIR BIOGEOGRAPHIC SIGNIFICANCE
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Abstract:
In eastern South Tianshan, the age of the Arpishmebulaq Formation with Tabulata is defined again as Late Lochkovian, Early Devonian. The corals from the Arpishmebulaq Formation differ from those of the equivalent horizons in the Junggar Hingan biogeographic region but are similar to those from the Shanjiang Formation in Lijiang County, Yunnan, the Xiaputonggou Formation in Zoige County, Sichuan, the Alugong Formation in Darhan Mumingan Joint Banner, Inner Mongolia and the Erhtaokou Formation near Jilin City, Jilin. During early Early Devonian in China, a big biogeogogphic region is situated to the south of the Junggar Hingan biogegraphic region, and this region, including South Tianshan, Central Jilin, south Inner Mongolia, West Qiling Mountains and northwest Yunnan etc., should belong to the Palaeotethyan Province of the Old World Realm.
