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New arthrodires (Family Williamsaspididae) from Wee Jasper, New South Wales (Early Devonian), with commonts on placoderm morphology and palaeoecology

Young, Gavin

Description

Two new arthrodire species represented by articulated trunk armours from the Early Devonian (Emsian) limestones of the Burrinjuck area are placed in a new genus Elvaspis (E. tuberculata, E. whitei), assigned to the Family Williamsaspididae. On new evidence of the dermal neck-joint and shape of the median dorsal plate this family is reassigned from the Phlyctaeniina to the Brachythoraci. The strongly ornamented post-branchial lamina of the trunk armour relates to a recent hypothesis that special...[Show more]

CollectionsANU Research Publications
Date published: 2009
Type: Journal article
URI: http://hdl.handle.net/1885/54987
Source: Acta Zoologica: international journal for zoology
DOI: 10.1111/j.1463-6395.2008.00366.x

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