Rhytiobeyrichia, a new beyrichiacean ostracod from the late Devonian of Western Australia  


Authors / CoAuthors

Jones, P.J.

Abstract

A palaeocope ostracod with a distinct lobation and crumina occurs in the late Devonian (Strunian) sequences of the Canning and Bonaparte Basins. It is assigned to the new genus Rhytiobeyrichia, and is interpreted, within Martinssons scheme of beyrichiacean phylogeny, as an advanced beyrichiine. The interpretation of its ontogeny and sexual dimorphism, based on limited material, indicates that the genus is represented by a single rather than sympatric, species. The species, Rhytiobeyrichia waruwa sp.nov. ( = type species of Rhytiobeyrichia), if interpreted correctly, is unique in representing a possible example of the phenomenon of preadult dimorphism in the Beyrichiacea. This tentative daim would be negated if later work, based on more material, shows that R. waruwa sp.nov. does in fact consist of more than one species. The occurrence of Rhytiobeyrichia waruwa sp. nov. in strata of comparable (Strunian) age in the Canning and Bonaparte Basins indicates its value for correlation. In the Canning Basin, the stratigraphy of the Fairfield Group, as identified by Druce and Radke (1979) in several well sections, is in need of revision. This interval, a good source potential for petroleum, is reinterpreted for the Napier No. 1 and No.4 Wells.

Product Type

document

eCat Id

81226

Contact for the resource

  Custodian

Corp  

  Owner

Commonwealth of Australia (Geoscience Australia)  

  Custodian

Commonwealth of Australia (Geoscience Australia)  
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia

Keywords

  • GA PublicationJournal
  • NTWA
Australian and New Zealand Standard Research Classification (ANZSRC)
  • Earth Sciences
  • Published_External

Publication Date

1987-01-01T00:00:00

Creation Date

Security Constraints

Australian Government Security ClassificationSystem    

Classification - unclassified

Legal Constraints

Creative Commons Attribution 4.0 International Licence    

Access - license

Use - license

Status

Purpose

Maintenance Information

unknown

Topic Category

geoscientificInformation

Series Information

BMR Journal of Australian Geology and Geophysics 10:3:287-300

Lineage

Unknown

Parent Information

Extents

[-24.04, -13.32, 118.6, 129.94]

Reference System

Spatial Resolution

Service Information

Associations

Downloads and Links

Journal article (pdf)  

Source Information

Source data not available.