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A new actinopterygian from the Late Devonian Gogo Formation, Western Australia

Choo, Brian; Lu, Jing; Giles, Sam; Trinajstic, Kate; Long, John

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The study of early actinopterygians (ray‐finned fishes) from the Devonian has been hampered by imperfect preservation in the majority of taxa. The Late Devonian (early Frasnian) Gogo Formation of north‐western Western Australia is notable in producing complete fossil actinopterygians with exceptional three‐dimensional preservation of both the dermal and endoskeletal anatomy. Four taxa have been described and have proved invaluable in understanding the anatomy of early representatives of this...[Show more]

dc.contributor.authorChoo, Brian
dc.contributor.authorLu, Jing
dc.contributor.authorGiles, Sam
dc.contributor.authorTrinajstic, Kate
dc.contributor.authorLong, John
dc.date.accessioned2020-06-16T01:32:51Z
dc.identifier.issn2056-2802
dc.identifier.urihttp://hdl.handle.net/1885/205171
dc.description.abstractThe study of early actinopterygians (ray‐finned fishes) from the Devonian has been hampered by imperfect preservation in the majority of taxa. The Late Devonian (early Frasnian) Gogo Formation of north‐western Western Australia is notable in producing complete fossil actinopterygians with exceptional three‐dimensional preservation of both the dermal and endoskeletal anatomy. Four taxa have been described and have proved invaluable in understanding the anatomy of early representatives of this clade. Here, we present a fifth Gogo taxon, based on a single exceptionally preserved specimen and representing a new genus and species of early ray‐finned fish. The neurocranium was CT scanned, permitting a detailed examination of the endocast. The new taxon possesses unusual features including a greatly enlarged spiracular opening and extensive spinose ornamentation on the dermal skull bones, median ridge scutes and lepidotrichia. The endocast displays a mosaic of characters, some of which are similar to Mimipiscis and non‐actinopterygian outgroups, while other features are more akin to Raynerius from the Late Devonian of France as well as several stratigraphically younger taxa. A phylogenetic analysis resolves the new form as sister taxon to fishes from the Late Devonian of the northern hemisphere and all post‐Devonian actinopterygians, confirming that the assemblage of fossil ray fins from the Gogo Formation is part of the wider Devonian actinopterygian radiation.
dc.description.sponsorshipThis work was supported by and Australian Research Council DECRA project DE16100247, and by grants from the Chinese Academy of Sciences (KZCX2-YW-156), the Major Basic Research Projects (2012CB821902) of Ministry of Science and Technology of the People’s Republic of China, the National Natural Science Foundation of China (41872023 and 41472016), the CAS/SAFEA International Partnership Programme for Creative Research Teams, the Strategic Priority Research Program of Chinese Academy of Sciences (grant no. XDB26000000) and a Royal Society Dorothy Hodgkin Research Fellowship.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherWiley
dc.rights© The Palaeontological Association
dc.sourcePapers in Palaeontology
dc.titleA new actinopterygian from the Late Devonian Gogo Formation, Western Australia
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume5
dc.date.issued2019
local.identifier.absfor040308 - Palaeontology (incl. Palynology)
local.identifier.absfor060309 - Phylogeny and Comparative Analysis
local.identifier.absfor060206 - Palaeoecology
local.identifier.ariespublicationu5786633xPUB735
local.publisher.urlhttps://www.wiley.com/en-gb
local.type.statusPublished Version
local.contributor.affiliationChoo, Brian, Flinders University
local.contributor.affiliationLu, Jing, College of Science, ANU
local.contributor.affiliationGiles, Sam, University of Oxford
local.contributor.affiliationTrinajstic, Kate, Curtin University of Technology
local.contributor.affiliationLong, John, Flinders University of South Australia
local.description.embargo2037-12-31
dc.relationhttp://purl.org/au-research/grants/arc/DE16100247
local.bibliographicCitation.issue2
local.bibliographicCitation.startpage343
local.bibliographicCitation.lastpage363
local.identifier.doi10.1002/spp2.1243
local.identifier.absseo970106 - Expanding Knowledge in the Biological Sciences
local.identifier.absseo970104 - Expanding Knowledge in the Earth Sciences
local.identifier.absseo959999 - Cultural Understanding not elsewhere classified
dc.date.updated2020-01-12T07:18:08Z
local.identifier.scopusID2-s2.0-85058654350
CollectionsANU Research Publications

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