Seximembrate apparatus structure of the Late Cambrian coniform conodont Teridontus nakamurai from the Chatsworth Limestone, Georgina Basin, Queensland

The multielement structure of the Late Cambrian euconodont Teridontus nakamurai (Nogami, 1967) is shown to be a seximembrate apparatus consisting of Sa, Sc, Sb, Sd, Pb and Pa elements. No M element has been identified and none is expected in this type of conodont. All elements are coniform with a hyaline base and albid tissue in the cusp extending from the apex of the basal cavity to near the cusp tip. The cusp tip is usually hyaline. The albid tissue is dense and the juncture of hyaline and albid tissues at the basal cavity apex is usually abrupt and planar, rather than tapered as found in most coniform element species. Albid tissue fills the entire diameter of the cusp, and there is no outer layer of hyaline tissue. The S elements have a relatively long base and are differentiated by their cross-sectional shape. The P elements have a short base and different cross-sectional shapes. The surface of all elements is covered with a very fine striate ornament, but the elements lack other surface structures, such as keels, carinae, costae and grooves.

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Date (Publication)
1994-01-01T00:00:00
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Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/81404

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Australian Geological Survey Organisation

 Canberra
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Nicoll, R.S.

 1
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AGSO Journal of Australian Geology and Geophysics

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15:3:367-379

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Commonwealth of Australia (Geoscience Australia)
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Commonwealth of Australia (Geoscience Australia)

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Australian and New Zealand Standard Research Classification (ANZSRC)

  • Earth Sciences

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Creative Commons Attribution 4.0 International Licence

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4.0

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http://creativecommons.org/licenses/

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2018-11-01T00:00:00
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English
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Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
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https://www.protectivesecurity.gov.au/Pages/default.aspx

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Unclassified

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urn:uuid/fae9173a-7159-71e4-e044-00144fdd4fa6

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English
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UTF8
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Commonwealth of Australia (Geoscience Australia)

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Document
Name

AGSO BMR Journal

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eCatId/81404

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https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/fae9173a-7159-71e4-e044-00144fdd4fa6

Date info (Revision)
2018-04-20T06:07:34
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2014-06-03T00:00:00

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AU/NZS ISO 19115-1:2014

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ISO 19115-1:2014

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ISO 19115-3

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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014

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Version 2.0, September 2018

Citation identifier
https://pid.geoscience.gov.au/dataset/ga/122551

 
 

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