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Ordovician (Early Darriwilian) Conodonts and Sponges from West of Parkes, Central New South Wales

Proceedings of the Linnean Society of New South Wales
Volume 129 (19 Mar 2008)

Abstract: A well preserved conodont fauna and an associated small sponge assemblage recovered from a limestone lens exposed on Kirkup Station, 15 km west of Parkes, New South Wales are described and illustrated. The conodont fauna is exceptionally rich by Australian standards, represented by nearly 4,000 specimens, but low in diversity including only six species: Erraticodon balticus Dzik, 1978, Kirkupodus tricostatus gen. et sp. nov., Protopanderodus cf. varicostatus (Sweet and Bergstr m, 1962), Protopanderodus? nogamii (Lee, 1975), Juanognathus serpaglii Stouge, 1984, and Pseudooneotodus mitratus (Moskalenko, 1973). The species definition of E. balticus is revised based on the current collection of over 1,700 specimens. Co-occurrence of E. balticus, J. serpaglii and P. cf. varicostatus suggests an early Darriwilian (Da2) age for the fauna, which is correlated with that from the basal Weemalla Formation exposed further east near Orange. Two anthaspidellid sponges occur in the assemblage. The stromatoporoid Ianilamina kirkupensis gen. et sp. nov. is the oldest stromatoporoid reported from Australia, and among the oldest known. A shallow-water, near-shore setting for the fauna is supported by the abundant occurrence of algal oncolites and certain sedimentary features in the limestone lens.

To cite this article: Zhen, Yong Yi and Pickett, John. Ordovician (Early Darriwilian) Conodonts and Sponges from West of Parkes, Central New South Wales [online]. Proceedings of the Linnean Society of New South Wales, Vol. 129, 19 Mar 2008: 57-82. Availability: <http://search.informit.com.au/documentSummary;dn=748554707884296;res=IELHSS> ISSN: 0370-047X. [cited 29 May 16].

Personal Author: Zhen, Yong Yi; Pickett, John; Source: Proceedings of the Linnean Society of New South Wales, Vol. 129, 19 Mar 2008: 57-82 Document Type: Journal Article ISSN: 0370-047X Subject: Geology, Stratigraphic; Paleontology; Conodonts; Ordovician Geologic Period; Sponges; Affiliation: (1) Palaeontology Section, The Australian Museum, 6 College Street, Sydney NSW 2010, Australia, email: yongyi.zhen@austmus.gov.au
(2) Geological Survey of New South Wales, NSW Department of Primary Industries, State Geoscience Centre, 947-953 Londonderry Road, Londonderry, NSW 2753, and Research Associate, Australian Museum, Sydney, Australia

Database: Humanities & Social Sciences Collection