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X-ray microtomography of 410 million-year-old optic capsules from placoderm fishes

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dc.contributor.authorBurrow, Carole
dc.contributor.authorJones, Allan
dc.contributor.authorYoung, Gavin
dc.date.accessioned2015-12-13T22:54:09Z
dc.date.issued2005
dc.date.updated2015-12-11T11:01:57Z
dc.description.abstractThe structure of two small ossified optic capsules from mid-Palaeozoic placoderm fishes has been revealed in fine detail, by the use of X-ray microtomography analysis and 3D visualisation software. These two specimens are 410 million-year-old; they were collected from an Early Devonian (Lochkovian) limestone in central New South Wales, and are the oldest known optic capsules from jawed fishes. The capsules show attachment areas for seven extrinsic eye muscles, rather than the six until recently deemed universal for gnathostomes. The analysis also revealed structures within the ossified cartilage which covered the medial surface of the eyeball, including nerve tracts, vascular canals, and possibly a choroid rete mirabile.
dc.identifier.issn0968-4328
dc.identifier.urihttp://hdl.handle.net/1885/82114
dc.publisherPergamon-Elsevier Ltd
dc.sourceMicron
dc.subjectKeywords: Computer software; Eye controlled devices; Muscle; Visualization; X ray analysis; Jawed fishes; Medial surface; Ossified optic capsules; Vascular canals; Fisheries; animal; article; computer assisted tomography; eye; fish; fossil; histology; methodology; 3D visualisation; Devonian period; Early vertebrate eye; Micro-CT; Optic capsule; Placodermi; X-ray microtomography
dc.titleX-ray microtomography of 410 million-year-old optic capsules from placoderm fishes
dc.typeJournal article
local.bibliographicCitation.lastpage557
local.bibliographicCitation.startpage551
local.contributor.affiliationBurrow, Carole, University of Queensland
local.contributor.affiliationJones, Allan, University of Sydney
local.contributor.affiliationYoung, Gavin, College of Physical and Mathematical Sciences, ANU
local.contributor.authoruidYoung, Gavin, u4466328
local.description.embargo2037-12-31
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.absfor040311 - Stratigraphy (incl. Biostratigraphy and Sequence Stratigraphy)
local.identifier.absfor040308 - Palaeontology (incl. Palynology)
local.identifier.ariespublicationMigratedxPub10406
local.identifier.citationvolume36
local.identifier.doi10.1016/j.micron.2005.05.005
local.identifier.scopusID2-s2.0-23044477456
local.type.statusPublished Version

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