Mount Crosby Insect locality B (QM collection): Norian, Australia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Insecta
- Hymenoptera
- Xyelidae
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Archexyela ipswichensis n. sp.
Engel 2005
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1 specimen | |||||||||
| QMF 44154 (1 measurement) | ||||||||||
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Insecta
- Hemiptera
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Heterochterus timmsii
Evans 1971
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Evans 1971 | 1 specimen | ||||||||
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Insecta
- Hemiptera
- Dysmorphoptilidae
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Dysmorphoptiloides elongata
Evans 1956
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Lambkin 2015 | 7 specimens | ||||||||
| QM F57804-57810 | ||||||||||
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Insecta
- Hemiptera
- Hylicellidae
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Mesothymbris woodwardi
Evans 1956
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Lambkin 2019 | 10 specimens | ||||||||
| synonym of Mesothymbris perkinsi | ||||||||||
| QMF 6976a/b, 6981, 59852, 59854, 59855, 59856, 59857, 59858a/b, 59859a/b, 59860a/b | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Australia | State/province: | Queensland |
| Coordinates: | 27.6° South, 152.8° East (view map) | ||
| Paleocoordinates: | 58.5° South, 101.2° East | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | outcrop |
Time
| Period: | Triassic | Epoch: | Late/Upper Triassic |
| Stage: | Norian | 10 m.y. bin: | Triassic 4 |
| Key time interval: | Norian | ||
| Age range of interval: | 227.00000 - 208.50000 m.y. ago |
Stratigraphy
| Formation: | Mount Crosby | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Purdy & Cranfield (2013) reported an unpublished SHRIMP date of 226±2 Ma for the Brisbane Tuff. Therefore, the Blackstone Formation may be considered younger than 226 Ma in absolute age. Thus, the Ipswich Coal Measures above the Brisbane Tuff, which is to say, the succession from the Mount Crosby Formation to the top of the Blackstone Formation must now be considered Norian.
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Lithology and environment
| Primary lithology: | lithified "shale" | ||
| Environment: | lacustrine - small | Tectonic setting: | rift |
| Geology comments: Ipswich basin; transtensional rift in intermontane setting. Basin geometry affected by strike-slip movement along West Ipswich fault. Ipswich coal measures deposited near end of rifting phase. | |||
Taphonomy
| Modes of preservation: | body,adpression |
| Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Repository: Queensland Museum, Brisbane | |
Metadata
| Database number: | 156521 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham |
| Modifier: | M. Clapham | Research group: | paleoentomology |
| Created: | 2014-05-22 20:44:44 | Last modified: | 2017-05-23 16:34:15 |
| Access level: | the public | Released: | 2014-05-22 20:44:44 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 41249. | M. S. Engel. 2005. A new sawfly from the Triassic of Queensland (Hymenoptera: Xyelidae). Memoirs of the Queensland Museum 51(2):558 [M. Clapham/A. Delelli/M. Clapham] |
Secondary references:
| 51287 | J. W. Evans. 1971. Some Upper Triassic Hemiptera from Mount Crosby, Queensland. Memoirs of the Queensland Museum 16:145-151 [M. Clapham/M. Clapham] | |
| 56151 | K. J. Lambkin. 2015. Revision of the Dysmorphoptilidae with emarginate tegmina (Hemiptera: Auchenorryncha: Cicadomorpha: Prosboloidea) of the Queensland Triassic. Zootaxa 3936:357-374 [M. Clapham/M. Clapham] | |
| 70632 | K. J. Lambkin. 2019. Revision of Mesothymbris Evans, 1956, from the Late Triassic of Mount Crosby, Queensland (Hemiptera: Cicadomorpha: Hylicelloidea: Hylicellidae). Zootaxa 4629:389-396 [M. Clapham/M. Clapham] |