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2011•Memoir ... of the Association of Australasian PalaeontologistsRequires access

The Trilobite 'Chacomurus' (Dalmanitidae, Synphoriinae) from the Lower Devonian of Bolivia

David J. Holloway

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Abstract

The hitherto poorly known dalmanitid trilobite genus Chacomurus Branisa and Vanek, 1973, with type and only recognised species C. confragosus from the upper Lochovian or Pragian to Emsian of Bolivia, is revised and its morphology clarified. Its assignment to the subfamily Synphoriinae is supported. The genus is closely related to Coronura Hall and Clarke, 1888 from the Eifelian, both genera probably having their origins in a common ancestor in eastern North America during the Early Devonian.

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What this paper is about

The hitherto poorly known dalmanitid trilobite genus Chacomurus Branisa and Vanek, 1973, with type and only recognised species C. confragosus from the upper Lochovian or Pragian to Emsian of Bolivia, is revised and its morphology clarified. Its assignment to the subfamily Synphoriinae is supported. The genus is closely related to Coronura Hall and Clarke, 1888 from the Eifelian, both genera probably having their origins in a common ancestor in eastern North America during the Early Devonian.

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Available abstract

The hitherto poorly known dalmanitid trilobite genus Chacomurus Branisa and Vanek, 1973, with type and only recognised species C. confragosus from the upper Lochovian or Pragian to Emsian of Bolivia, is revised and its morphology clarified. Its assignment to the subfamily Synphoriinae is supported. The genus is closely related to Coronura Hall and Clarke, 1888 from the Eifelian, both genera probably having their origins in a common ancestor in eastern North America during the Early Devonian.

Key concepts: Trilobite, Devonian, Subfamily, Genus, Paleontology, Ancestor, Geography, Geology

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The Trilobite 'Chacomurus' (Dalmanitidae, Synphoriinae) from the Lower Devonian of Bolivia — Research Paper | ScholarLens