A New Carcinosomatid Eurypterid From The Upper Silurian Of Northern Vietnam | Zendy

Braddy Simon J. | Zendy; Selden Paul A. | Zendy; Truong Doan Nhat | Zendy

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A New Carcinosomatid Eurypterid From The Upper Silurian Of Northern Vietnam

Author(s) -

Braddy Simon J.,

Selden Paul A.,

Truong Doan Nhat

Publication year - 2002

Publication title -

palaeontology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.69

H-Index - 63

eISSN - 1475-4983

pISSN - 0031-0239

DOI - 10.1111/1475-4983.00267

Subject(s) - paleontology , devonian , geology , peninsula , margin (machine learning) , paleozoic , biology , ecology , machine learning , computer science

A new carcinosomatid eurypterid, Rhinocarcinosoma dosonensis sp. nov., and Hughmilleria sp., are described from the Dô Son Formation of the Dô Son Peninsula, northern Vietnam. R. dosonensis is characterized by podomere 7 of prosomal appendage VI produced into an anterodistal spine, a metastoma with a cordate posterior margin, and an indented opisthosomal differentiation (i.e. preabdomen–postabdomen margin is concave). The Dô Son Formation was originally interpreted as Late Devonian (Givetian/Frasnian) in age but the unit containing the eurypterid assemblage is now considered much older (Late Silurian). A deltaic palaeoenvironmental setting is interpreted from biotic associations and sedimentological evidence.

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