Australian Pterygotid III: Emsian, Australia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Eurypterida
- Pterygotidae
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Pterygotidae indet.
Clarke and Ruedemann 1912
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| see common names | |||||||
Geography
| Country: | Australia | State/province: | Victoria |
| Coordinates: | 37.0° South, 143.4° East (view map) | ||
| Paleocoordinates: | 21.1° South, 170.7° East |
Time
| Period: | Devonian | Epoch: | Early Devonian |
| Stage: | Emsian | 10 m.y. bin: | Devonian 2 |
| Key time interval: | Emsian | ||
| Age range of interval: | 407.6 - 393.3 m.y. ago |
Stratigraphy
| Geological group: | Walhalla | Formation: | Montys Hut |
Lithology and environment
| Primary lithology: | lithified siltstone |
| Secondary lithology: | lithified claystone |
| Lithology description: All specimens are preserved as almost completely flat, cream or grey coloured impressions on cream coloured silt- to claystone. | |
| Environment: | marginal marine indet. |
| Geology comments: This unit likely formed in quiet bottom water conditions (Edwards et al.,
1997). This is supported by the associated brachiopod assemblage (the Taungurungetes taggertyensis assemblage, see Earp, 2016) which resembles the BA2 chonetids community of Boucot (1975, p. 17, fig. 8). This community is typically found in intertidal, quiet (very low energy) water environments, with a maximum water depth of approximately 10 m. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 225148 | ||
| Authorizer: | R. Plotnick | Enterer: | R. Plotnick |
| Modifier: | R. Plotnick | ||
| Created: | 2022-04-27 14:13:32 | Last modified: | 2022-04-27 14:15:10 |
| Access level: | the public | Released: | 2022-04-27 14:13:32 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 81457. | R.D.C. Bicknell, P.M. Smith, and M. Poschmann. 2020. Re-evaluating evidence of Australian eurypterids. Gondwana Research 86:164-181 [R. Plotnick/R. Plotnick/M. McClennen] |