Shark faunas from the Late Jurassic—Early Cretaceous of northeastern Thailand
作者： Gilles Cuny , Romain Liard , Uthumporn Deesri , Tida Liard , Suchada Khamha
DOI: 10.1007/S12542-013-0206-0
关键词: Fauna 、 Cretaceous 、 Hybodus 、 Ecology 、 Acrodus 、 Lonchidion 、 Vertebrate paleontology 、 Hybodontiformes 、 Jiaodontus 、 Geology
摘要: A revision of the freshwater shark fauna from Phu Kradung Formation in NE Thailand allows recognition a new species Acrodus, which represents youngest occurrence genus and confirms its displacement environments after Toarcian. The rest includes teeth Hybodus sp., aff. hybodontid dermal denticles, Jiaodontus Lonchidion sp. A, B, Heteroptychodus cf. H. kokutensis dorsal fin spines. presence Jaiodontus unusual denticles suggests Jurassic age for most Formation, whereas an Early Cretaceous top Formation. However, is still uncertain, with contradictory signals coming palynology, detrital zircon thermochronology vertebrate palaeontology. In any case, it appears that this oldest Heteroptychodus, Thai origin genus, may have replaced Acrodus palaeoecosystems. Together some European affinities
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