A new bothriolepid antiarch (Pisces, Placodermi) from the Devonian of Dô Son peninsula, northern Vietnam

J. A. Long; C. F. Burrett; Pham Kim Ngan; P. Janvier

doi:10.1080/03115519008619054

A new bothriolepid antiarch (Pisces, Placodermi) from the Devonian of Dô Son peninsula, northern Vietnam

J. A. Long, C. F. Burrett, Pham Kim Ngan, P. Janvier

Research output: Contribution to journal › Article

16 Citations (Scopus)

Abstract

A new bothriolepid antiarch, Vietnamaspis trii gen. et sp. nov., is described from the Middle-Upper Devonian sandstones of the Dô Son peninsula, near Haiphong, Vietnam. The site is north of the Song Ma suture zone on the South China Terrane, and contains a fauna including Bothriolepis and groenlandaspids. Vietnamaspis gen. nov. is characterized by having a long, parallel-sided posterior median dorsal plate, and an anterior median dorsal plate with a narrow anterior margin. Vietnamaspis gen. nov. is regarded as a sister taxon to Bothriolepis and Grossilepis because it has a relatively large axillary foramen on the anterior ventrolateral plate. The Australian bothriolepid Bothriolepis warreni Long 1983 is referred to a new genus, Briagalepis gen. nov., because it has very short overlap surfaces for the anterior dorsolateral plate on the anterior median dorsal plate, and lacks a reticulate dermal ornament.

Original language	English
Pages (from-to)	181-194
Number of pages	14
Journal	Alcheringa
Volume	14
Issue number	3
DOIs	https://doi.org/10.1080/03115519008619054
Publication status	Published - 1990
Externally published	Yes

Keywords

Antiarchi
Bothriolepididae
Devonian
New genus
Placodermi
Vietnam

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10.1080/03115519008619054Licence: In Copyright

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Long, J. A., Burrett, C. F., Ngan, P. K., & Janvier, P. (1990). A new bothriolepid antiarch (Pisces, Placodermi) from the Devonian of Dô Son peninsula, northern Vietnam. Alcheringa, 14(3), 181-194. https://doi.org/10.1080/03115519008619054

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AU - Janvier, P.

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N2 - A new bothriolepid antiarch, Vietnamaspis trii gen. et sp. nov., is described from the Middle-Upper Devonian sandstones of the Dô Son peninsula, near Haiphong, Vietnam. The site is north of the Song Ma suture zone on the South China Terrane, and contains a fauna including Bothriolepis and groenlandaspids. Vietnamaspis gen. nov. is characterized by having a long, parallel-sided posterior median dorsal plate, and an anterior median dorsal plate with a narrow anterior margin. Vietnamaspis gen. nov. is regarded as a sister taxon to Bothriolepis and Grossilepis because it has a relatively large axillary foramen on the anterior ventrolateral plate. The Australian bothriolepid Bothriolepis warreni Long 1983 is referred to a new genus, Briagalepis gen. nov., because it has very short overlap surfaces for the anterior dorsolateral plate on the anterior median dorsal plate, and lacks a reticulate dermal ornament.

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