Product catalogue
Further Petalichthyid remains (Placoderm fishes, Early Devonian) from the Taemas-Wee Jasper region, New South Wales
New material referable to the order Petalichthyida (placodermi) is described from the Early Devonian limestones of the Taemas-Wee Jasper area, New South Wales. Shearsbyaspis oepiki gen. et sp. nov. is represented by two incomplete skulls, one including parts of the endocranium. It differs from other genera in having discrete rostral and pineal plates that completely separate the preorbitals of each side. It resembles Lunaspis in the size of the central plates, and Wijdeaspis in the shape of the anterior paranuchal plate. In the endocranium, a lateral preorbital space is identified, communicating posteriorly with the orbital cavity. In the orbit, the optic nerve foramen and eyestalk attachment area are described. Two foramina behind the optic nerve foramen, possibly for anterior and posterior branches of the oculomotor nerve, are not associated with a myodome. Isolated median dorsal, spinal, and ventral trunk-shield plates are assigned to Lunaspis sp.on the basis of ornament. The median dorsal plate carries a median ventral cavity near its posterior margin, a structure not previously described in petalichthyids. Three competing hypotheses of petalichthyid relationships are briefly discussed. It is suggested that the ventral cavity on the median dorsal is primitive for placoderms, and the position of the corresponding cavity in antiarchs, anterior to the transverse thickening, might be a derived condition.
Simple
Identification info
- Date (Publication)
- 1984-01-01T00:00:00
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/81176
- Cited responsible party
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Role Organisation / Individual Name Details Publisher Bureau of Mineral Resources, Geology and Geophysics
Canberra Author Young, G.C.
1
- Name
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BMR Journal of Australian Geology and Geophysics
- Issue identification
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9:2:121-131
- Point of contact
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Role Organisation / Individual Name Details Custodian Corp
Owner Commonwealth of Australia (Geoscience Australia)
Custodian Commonwealth of Australia (Geoscience Australia)
Voice
- Topic category
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- Geoscientific information
Extent
))
- Maintenance and update frequency
- Unknown
Resource format
- Title
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Product data repository: Various Formats
- Website
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Data Store directory containing the digital product files
Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes
- Keywords
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GA Publication
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Journal
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- Keywords
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NSW
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- Australian and New Zealand Standard Research Classification (ANZSRC)
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Earth Sciences
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- Keywords
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Published_External
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Resource constraints
- Title
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Creative Commons Attribution 4.0 International Licence
- Alternate title
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CC-BY
- Edition
-
4.0
- Access constraints
- License
- Use constraints
- License
Resource constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice
- OnLine resource
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Journal article (pdf)
Journal article (pdf)
- Distribution format
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pdf
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Resource lineage
- Statement
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Unknown
- Hierarchy level
- Non geographic dataset
- Other
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GA Publication
- Description
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Source data not available.
Metadata constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/fae9173a-7075-71e4-e044-00144fdd4fa6
- Title
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GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice
Type of resource
- Resource scope
- Document
- Name
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AGSO BMR Journal
Alternative metadata reference
- Title
-
Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/81176
- Date info (Revision)
- 2018-04-20T06:08:23
- Date info (Creation)
- 2014-06-03T00:00:00
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-3
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/122551