ALCOA - Anglesea Site I Brachychiton lens: Middle Eocene, Australia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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informal Others taxa indet. leaf, cuticle
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14 %-specimens | ||||||
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Angiospermae
- Malvales
- Sterculiaceae
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Brachychiton indet. leaf, cuticle
Schott and Endlicher 1832
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70 %-specimens | ||||||
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Angiospermae
- Proteales
- Proteaceae
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Proteacidites concretus microspore
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Angiospermae
- Laurales
- Lauraceae
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Lauraceae (informal II) indet. leaf, cuticle
Jussieu 1789
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8 %-specimens | ||||||
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Lauraceae (informal III) indet. leaf, cuticle
Jussieu 1789
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2 %-specimens | ||||||
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Lauraceae (informal IV) indet. leaf, cuticle
Jussieu 1789
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4 %-specimens | ||||||
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Angiospermae
- Myrtales
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Myrtaceidites spp. microspore
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Gymnospermae
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Gymnospermae indet. microspore
()
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| replaced by Pinophyta | |||||||
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Coniferales
- Podocarpaceae
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Podocarpidites spp. microspore
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Lygistepollenites florinii microspore
Stover and Evans 1973
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Magnoliopsida
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Haloragacidites harrisii microspore
Mildenhall and Harris 1971
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Cycadopsida
- Cycadales
- Zamiaceae
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Pterostoma indet. leaf, cuticle
Hill 1980
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2 %-specimens | ||||||
| see common names | |||||||
Geography
| Country: | Australia | State/province: | Victoria |
| Coordinates: | 38.4° South, 144.2° East (view map) | ||
| Paleocoordinates: | 59.8° South, 144.4° East | ||
| Basis of coordinate: | based on nearby landmark |
Time
| Period: | Paleogene | Epoch: | Eocene |
| 10 m.y. bin: | Cenozoic 2-3 | ||
| Key time interval: | Middle Eocene | Pollen zone: | Lower and Middle Nothofagus asperus |
| Age range of interval: | 47.80000 - 37.71000 m.y. ago |
Stratigraphy
| Formation: | Eastern View | ||||
| Stratigraphy comments: the clay lenses are placed, based on diagnostic taxa which begin their stratigraphic range, at the base of the Triorites magnificus Zone, at or about that point which corresponds to the boundary of the Lower and Middle N. asperus Zone of late Middle Eocene age. The coal is of a Middle Eocene
age. |
Lithology and environment
| Primary lithology: | lenticular claystone |
| Environment: | "channel" |
| Geology comments: Meandering stream environment on a broad coastal plain that was adjacent to the embryonic Southern Ocean. | |
Taphonomy
| Modes of preservation: | adpression |
| Size of fossils: | macrofossils,microfossils |
Collection methods and comments
| Collection methods: | chemical |
| Collection size: | 50 specimens |
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: Palynomorphs: slides were scanned until 200 spores and pollen grains were counted.
This lens is situated approximately one metre above the coal surface, is characterized by a rarity of megafossils. | |
| Taxonomic list comments:Few Lauraceae leaves and one Pterostoma pinnule.
50 specimens. | |
Metadata
| Database number: | 167121 | ||
| Authorizer: | C. Jaramillo | Enterer: | C. Jaramillo |
| Modifier: | C. Jaramillo | ||
| Created: | 2015-03-07 14:23:20 | Last modified: | 2015-03-09 17:41:37 |
| Access level: | the public | Released: | 2015-03-07 14:23:20 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 54383. | D. C. Christophel, W. K. Harris, and A. K. Syber. 1987. The Eocene flora of the Anglesea Locality, Victoria. Alcheringa 11(4):303-323 [C. Jaramillo/A. Cárdenas] |
Secondary references:
| 54802 | D. C. Christophel. 1994. The early Tertiary macrofloras of continental Australia. History of the Australian Vegetation. Cretaceous to Recent [C. Jaramillo/C. Jaramillo] |