Abstract

More than 200 conodont clusters and 1300 discrete elements belonging to Polygnathus xylus xylus and Owrkodina brevis were recovered from a sample of the Upper Devonian Napier Formation in the Oscar Range of the Canning Basin, Western Australia. A study of them indicates that both P. xylus xylus and Q brevis had a multielement structure of 15 elements, belonging to seven element types: M (2), Sa (1), Sc (4), Sb (2), Sd (2), Pb (2), and Pa (2). The better preserved and more complete clusters of P. xylus xylus have been used as a basis, with reference to a recent find of an impression of a conodont animal, for a reconstruction of the head region, showing the position of the conodont elements. Two groups of elements with distinctly different functions are recognised. The anterior discernens elements (M, Sa, Sc, Sb, and Sd) serve to sort particulate food matter, and the posterior contundens elements (Pb, Pa), to crush the food particles prior to their entry into the gut.
Google map showing geographic bounding box with values North bound -16.0 East bound 129.0 West bound 117.5 South bound -24.0
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Product Type/Sub Type

nonGeographicDataset

Constraints

Creative Commons Attribution 4.0 International Licence

IP Owner

Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication)

1984-01-01T00:00:00

Product Type

nonGeographicDataset

Topic Category

geoscientificInformation

GA Catalogue Number

81177 Product http://www.ga.gov.au/metadata-gateway/metadata/record/81177/

Keywords

GA Publication
Journal
WA
Earth Sciences

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-16.0
East bound
129.0
West bound
117.5
South bound
-24.0

Lineage

Unknown

Digital Transfer Options

onLine

Distributor

Role
distributor
Organisation Name
Commonwealth of Australia (Geoscience Australia)
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address

Source Description

Source data not available.

Metadata File Identifier

fae9173a-7076-71e4-e044-00144fdd4fa6

Metadata Standard Name

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Metadata Standard Version

1.1

METADATA SECURITY CLASSIFICATION

unclassified

Metadata Contact

Role
pointOfContact
Organisation Name
Commonwealth of Australia (Geoscience Australia)
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address
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