Ad22, Bird Rock, Torquay: Chattian, Australia
collected by R. Daintree 1861
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Nautilida
- Aturiidae
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Aturia australis
(McCoy 1876)
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McCoy 1876 | |||||||||
| synonym of Aturia cubaensis | ||||||||||
| Aturia ziczac var. australis | ||||||||||
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Gastropoda
- Neogastropoda
- Volutidae
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Voluta macroptera
McCoy 1874
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Voluta anticingulata
McCoy 1874
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Gastropoda
- Cypraeidae
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Cypraea (Aricia) platyrhyncha
McCoy 1876
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McCoy 1876 | |||||||||
| recombined as Umbilia (Umbilia) platyrhyncha | ||||||||||
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Zoila glomerabilis
Darragh 2011
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Darragh 2011 | |||||||||
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Bivalvia
- Arcida
- Cucullaeidae
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Cucullaea corioensis
McCoy 1876
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McCoy 1876 | |||||||||
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Bivalvia
- Arcida
- Limopsidae
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Limopsis aurita
(Brocchi 1814)
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McCoy 1875 | |||||||||
| recombined as Limopsis (Limopsis) aurita | ||||||||||
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Bivalvia
- Cardiida
- Cardiidae
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Cardium pseudomagnum
McCoy 1877
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McCoy 1877 | |||||||||
| recombined as Hedecardium (Hedecardium) pseudomagnum | ||||||||||
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Bivalvia
- Trigoniida
- Trigoniidae
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Trigonia semiundulata
Jenkins 1865
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McCoy 1875 | |||||||||
| recombined as Eotrigonia semiundulata | ||||||||||
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Echinoidea
- Spatangoida
- Paleopneustidae
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Pericosmus compressus
(Duncan 1877)
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McCoy 1882 | |||||||||
| synonym of Pericosmus crawfordi | ||||||||||
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Anthozoa
- Pennatulacea
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Graphularia robinae
McCoy 1877
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McCoy 1877 | |||||||||
| see common names | ||||||||||
Geography
| Country: | Australia | State/province: | Victoria |
| Coordinates: | 38.3° South, 144.3° East (view map) | ||
| Paleocoordinates: | 52.9° South, 142.2° East | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Oligocene |
| Stage: | Chattian | 10 m.y. bin: | Cenozoic 4 |
| Key time interval: | Chattian | ||
| Age range of interval: | 27.82000 - 23.03000 m.y. ago |
Stratigraphy
| Formation: | Jan Juc | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: McCoy described the locality as from the "Miocene junction beds" or the "passage beds of the Tertiary sands" or just "sandy beds." Both the Jan Juc and overlying Puebla Formations are exposed at Bird Rock, but the Jan Juc Formation is coarser-grained. The associated fauna is also more characteristic of the Jan Juc Formation. AGE: Late Oligocene according to molluscan biostratigraphy of Darragh and Kendrick (2000) and Beu and Darragh (2001). Kelly et al. (2001) reported an age of 23.9 Ma for the basal Puebla Clay from Bird Rock, based on measured 87Sr/86Sr ratios from planktonic foraminifera, recalculated to 23.89-21.39 Ma by McLaren et al., 2009. McLaren calculated an age of 27.2-24.8 Ma for brachiopod shells (87Sr/86Sr) located about 7.5 m below the top of the Jan Juc Formation. Siesser (1979) found a possibly mid-Rupelian to earliest Aquitanian range for the Jan Juc Formation (NP24-NN1) and an early Miocene (NN2-NN4) age for the overlying Puebla Formation. Planktonic foraminifera in Li et al. (1999), including Globoquadrina dehiscens, suggest an early Aquitanian (M1b or mid N4) age for the basal Puebla Formation. Together, these lines of evidence support a latest Chattian age for the collection, although it could be basal Aquitanian. STRATIGRAPHIC POSITION: The description as "junction beds" or "passage beds" suggests that the collection is from the upper part of the formation, close to the distinct lithological contact with the Puebla Formation. | |||||
Lithology and environment
| Primary lithology: | bioturbation,glauconitic,shelly/skeletal poorly lithified argillaceous wackestone |
| Lithology description: LITHOLOGY: Uppermost 3 m of the Jan Juc succession at Bird Rock is composed of skeletal packstones, locally glauconitic and bioturbated (Kelly & Webb, 1999). Li et al. (1999) describe a core at Bird Rock as containing interbedded glauconitic marls and clayey glauconitic wackestones, interbedded with thin (bryozoan) skeletal grainstone and mollusc packstone layers. LITHIFICATION: Some units are described as lithified grainstone but the skeletal packstone is "very poorly indurated" (Kelly & Webb, 1999). | |
| Environment: | deep subtidal shelf |
| Geology comments: ENVIRONMENT: According to Kelly & Webb (1999), their fine-grained, poorly sorted character and the excellent preservation state of many of the fossils indicate deposition in a fairly deep, low-energy regime. Palaeodepth estimates for the Jan Juc and Puebla Formations, based on ostracod and foraminiferal faunas, are mid-shelfal, i.e. probably less than 120 m. According to Li et al., (1999), A lack of foraminifers commonly found from outer shelf and slope suggests that the sequence was mainly deposited in inner to mid-shelf environments. Jan Juc Formation also described as intermediate neritic by Li et al. (1999). | |
Taphonomy
| Modes of preservation: | body,original aragonite |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | medium |
Collection methods and comments
| Collection excludes: | all microfossils | ||
| Collection methods: | field collection,survey of museum collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | R. Daintree | Collection dates: | 1861 |
| Collection method comments: Collections are registered in the Western Australia Museum (WAM) and Museum of Victoria (NMV). | |||
| Taxonomic list comments:COVERAGE: Exhaustive for gastropoda and bivalvia. NOMENCLATURE: Includes both antiquated (Tate 1880's) and modern nomenclature, but all at species-level resolution. Nomenclature revised following Darragh (1980 and later texts). | |||
Metadata
| Database number: | 176279 | ||
| Authorizer: | P. Wagner, M. Clapham | Enterer: | P. Wagner, M. Clapham |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2016-02-05 15:10:15 | Last modified: | 2019-08-13 16:12:29 |
| Access level: | the public | Released: | 2016-02-05 15:10:15 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 27443. | F. McCoy. 1874. Decade I. Prodromus of the Palaeontology of Victoria 1-43 [L. Villier/L. Villier/M. Uhen] |
Secondary references:
| 57935 | T. A. Darragh. 2011. A revision of the Australian fossil species of Zoila (Gastropoda: Cypraeidae). Memoirs of Museum Victoria 68:1-28 [P. Wagner/P. Wagner] | |
| 14395 | F. McCoy. 1875. Decade II. Prodromus of the Palaeontology of Victoria 1-37 [M. Uhen/M. Uhen/M. Uhen] | |
| 57704 | F. McCoy. 1876. Prodromus of the Palaeontology of Victoria. Decade 3. 1-40 [P. Wagner/P. Wagner/M. Clapham] | |
| 30240 | F. McCoy. 1877. Prodromus of the Palaeontology of Victoria, Decade V 1-41 [M. Uhen/M. Uhen/M. Clapham] | |
| 30413 | F. McCoy. 1882. Prodromus of the Palaeontology of Victoria, Decade VII 1-30 [M. Uhen/M. Uhen/M. Clapham] |