Les vertébrés (Placodermi, Galeaspida) du Dévonien inférieur de la coupe de Lung Cô-Mia Lé, Province de Hà Giang, Viêt Nam, avec des données complémentaires sur les gisements à vertébrés du Dévonien du Bac Bo oriental
1999; Muséum national d'histoire naturelle; Volume: 21; Issue: 1 Linguagem: Inglês
ISSN
1638-9395
AutoresPhilippe Janvier, Tạ Hòa Phương,
Tópico(s)Paleontology and Stratigraphy of Fossils
ResumoThe vertebrates of the Si Ka, Bac Bun and Mia Le formations (Lower Devonian, Lochkovian-Pragian) of the Lung Co-Mia Le section (Ha Giang Province, northern Vietnam) are represented by some galeaspid, arthrodire and antiarch remains, and by a new petalichthyid, Tongdzuylepis vietnamensis n.g., n.sp. The faunal list of the Khao Loc Formation (Lower Lochkovian) at Tong Vai (Ha Giang Province) is completed by the description of a galeaspid, Laxaspis yulongssus, and three antiarchs, Heteroyunnanolepis qujingensis, Zhanjilepis aspratilis and Minicrania lissa n.sp. A new antiarch, Yunnanolepis spinulosa n.sp., associated with Chuchinolepis dongmoensis and Youngolepis sp., s is described from the transition beds between the Si Ka and Bac Bun formations at Ban Nhuân (Thai Nguyen Province, northern Vietnam). A complementary description and taxonomic comments are made for the galeaspids and antiarchs of the Bac Bun Formation at Dong Mo (Lang Son Province, northern Vietnam). Finally, a new sarcopterygian, Langdenia campylognatha n.sp. is described from the Bac Bun Formation at Trang Xa (Thai Nguyen Province).
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