Skip navigation
Skip navigation
Open Research will be down for maintenance between 8:00 and 8:15 am on Tuesday, December 1 2020.

New Phyllolepids (Placoderm fishes) from the middle-late Devonian of Southeastern Australia

Young, Gavin

Description

Phyllolepid placoderms from the Devonian Boyd Volcanic Complex on the south coast of New South Wales are described as Cobandrahlepis petyrwardi, gen. et sp. nov., and Yurammia browni, gen. et sp. nov. Both are more primitive than other described phyllolepids in retaining a posterior dorsolateral plate in the trunk armor. Cobandrahlepis resembles Placolepis Ritchie, 1984, in the shape of the nuchal plate in the skull, and Austrophyllolepis Long, 1984, in the more lateral position of the sensory...[Show more]

dc.contributor.authorYoung, Gavin
dc.date.accessioned2015-12-13T22:52:25Z
dc.identifier.issn0272-4634
dc.identifier.urihttp://hdl.handle.net/1885/81562
dc.description.abstractPhyllolepid placoderms from the Devonian Boyd Volcanic Complex on the south coast of New South Wales are described as Cobandrahlepis petyrwardi, gen. et sp. nov., and Yurammia browni, gen. et sp. nov. Both are more primitive than other described phyllolepids in retaining a posterior dorsolateral plate in the trunk armor. Cobandrahlepis resembles Placolepis Ritchie, 1984, in the shape of the nuchal plate in the skull, and Austrophyllolepis Long, 1984, in the more lateral position of the sensory groove on the paranuchal plate. Yurammia, gen. nov., differs from all other phyllolepids in lacking ridged ornament on the dermal bones. These new taxa add to the diversity of early members of the order Phyllolepida from East Gondwana, before the appearance of the genus Phyllolepis in the Northern Hemisphere during the last stage of the Late Devonian (Famennian). Phyllolepid placoderms, only recorded from non-marine deposits, have a unique disjunct distribution in both time and space between the Southern and Northern hemispheres. They document a major dispersal event indicating continental connection between Gondwana and Laurussia near the Frasnian-Famennian boundary, at about the time of the Late Devonian mass extinction.
dc.publisherSociety of Vertebrate Palaeontology
dc.sourceJournal of Vertebrate Paleontology
dc.subjectKeywords: Devonian; fish; Australasia; Australia; Eastern Hemisphere; World; Pisces
dc.titleNew Phyllolepids (Placoderm fishes) from the middle-late Devonian of Southeastern Australia
dc.typeJournal article
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume25
dc.date.issued2005
local.identifier.absfor040311 - Stratigraphy (incl. Biostratigraphy and Sequence Stratigraphy)
local.identifier.absfor040308 - Palaeontology (incl. Palynology)
local.identifier.ariespublicationMigratedxPub9838
local.type.statusPublished Version
local.contributor.affiliationYoung, Gavin, College of Physical and Mathematical Sciences, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.issue2
local.bibliographicCitation.startpage261
local.bibliographicCitation.lastpage273
dc.date.updated2015-12-11T10:51:00Z
local.identifier.scopusID2-s2.0-23044438465
CollectionsANU Research Publications

Download

File Description SizeFormat Image
01_Young_New_Phyllolepids_(Placoderm_2005.pdf2.93 MBAdobe PDF    Request a copy


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  19 May 2020/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator