Wyro Beach, Ulladulla: Roadian, Australia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Rostroconchia
- Conocardiida
- Bransoniidae
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Conocardium robustum
Fletcher 1943
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Fletcher 1943 | |||||||||
| recombined as Bransonia robustum | ||||||||||
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Conocardium australe
(M'Coy 1847)
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Fletcher 1943 | |||||||||
| recombined as Bransonia australe | ||||||||||
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Rhynchonellata
- Spiriferinida
- Syringothyrididae
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Subansiria ulladullensis n. sp.
Armstrong 1970
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| recombined as Cyrtella ulladullensis | ||||||||||
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Rhynchonellata
- Spiriferida
- Ingelarellidae
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Glendonia ulladullensis
McClung and Armstrong 1978
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McClung and Armstrong 1978 | |||||||||
| (1 measurement) | ||||||||||
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Rhynchonellata
- Terebratulida
- Dielasmatidae
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Fletcherithyris illawarrensis n. sp.
Campbell 1965
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Campbell 1965 | |||||||||
| (6 measurements) | ||||||||||
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Fletcherithyris parkesi n. sp.
Campbell 1965
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Campbell 1965 | |||||||||
| (5 measurements) | ||||||||||
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Rhynchonellata
- Terebratulida
- Gillediidae
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Gilledia culburrensis
Campbell 1965
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Campbell 1965 | |||||||||
| (2 measurements) | ||||||||||
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Gilledia ulladullensis n. sp.
Campbell 1965
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Campbell 1965 | |||||||||
| recombined as Paragilledia ulladullensis | ||||||||||
| (7 measurements) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Australia | State/province: | New South Wales |
| Coordinates: | 35.4° South, 150.4° East (view map) | ||
| Paleocoordinates: | 70.4° South, 162.3° East | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | outcrop |
Time
| Period: | Permian | Epoch: | Guadalupian |
| Stage: | Roadian | 10 m.y. bin: | Permian 3 |
| Key time interval: | Roadian | ||
| Age range of interval: | 273.01000 - 266.90000 m.y. ago |
Stratigraphy
| Formation: | Wandrawandian | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Brachiopods suggest the Echinalosia davidi or E. discinia zone, correlated with the upper part of APP3.3 to APP4.1 palynomorph zone (Briggs, 1998). There are no direct radiometric constraints on APP3.3, although the top of the underlying APP3.2 is around 271.6 Ma (Laurie et al., 2016), placing it near the Kungurian-Roadian boundary or in the lower Roadian. Strata in Western Australia assigned to APP4.1 yielded U-Pb ages of 269.25 Ma or younger, constraining the upper boundary of APP3.3 to the late Roadian. As a result, APP3.3 appears to fall entirely within the Roadian. The top of APP4.1 is likely late Wordian, constrained by earliest Capitanian radiometric dates in the lower part of APP4.2 (Laurie et al., 2016). The Broughton Formation, higher in the Sydney Basin succession, also yields an early Capitanian radiometric date (262.51 Ma) from its uppermost part (Metcalfe et al., 2015). Therefore upper parts of the formation are possibly early Wordian in age, but a Roadian age is assigned in the Ulladulla area. | |||||
Lithology and environment
| Primary lithology: | lithified mudstone |
| Environment: | prodelta |
| Geology comments: Fine-grained sediments indicate environment below wave base, and presence of slumps at Warden Head suggests prodelta rather than offshore. | |
Taphonomy
| Modes of preservation: | mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 101578 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2010-12-24 08:16:48 | Last modified: | 2023-06-07 20:03:30 |
| Access level: | the public | Released: | 2010-12-24 08:16:48 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 27376. | J. Armstrong. 1970. Syringothyrid brachiopods from the Permian of eastern Australia. Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 136(2):135-165 [M. Clapham/M. Clapham/M. Clapham] |
Secondary references:
| 14254 | K. S. W. Campbell. 1965. Australian Permian terebratuloids. Bureau of Mineral Resources Geology and Geophysics Bulletin 68:3-146 [T. Olszewski/L. Fall/M. Clapham] | |
| 15909 | H. O. Fletcher. 1943. The genus Conocardium from Australian Palaeozoic rocks. Records of the Australian Museum 21(4):231-243 [P. Wagner/P. Wagner/P. Wagner] | |
| 27930 | G. McClung and J. Armstrong. 1978. Species of Glendonia gen. nov. (Ingelarellinae: Spiriferida) in the Permian of eastern Australia. Geological Survey of Queensland Publication 365:1-5 [M. Clapham/M. Clapham] |