Macrofossil assemblage from Jason Peninsula - R.6647: Kimmeridgian - Early Tithonian, Antarctica
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Carditida
- Astartidae
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Bivalvia
- Pholadida
- Pleuromyidae
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Pleuromya sp.
(Meek 1873)
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Bivalvia
- Trigoniida
- Megatrigoniidae
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Bivalvia
- Trigoniida
- Myophorellidae
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Vaugonia ? sp.
Crickmay 1930
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Bivalvia
- Pectinida
- Oxytomidae
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Oxytoma sp.
(Meek and Hayden 1865)
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Bivalvia
- Pectinida
- Buchiidae
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Cephalopoda
- Ammonitida
- Perisphinctidae
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unclassified
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| close to Camptonectes (Camptonectes) robusta | ||||||||||
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Bennettitales
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Williamsonia sp.
Carruthers 1870
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| see common names | ||||||||||
Geography
| Country: | Antarctica |
| Coordinates: | 66.0° South, 60.6° West (view map) |
| Paleocoordinates: | 65.8° South, 29.2° West (Wright 2013) |
| Basis of coordinate: | stated in text |
| Geographic resolution: | small collection |
Time
| Period: | Jurassic | Epoch: | Late Jurassic |
| Stage: | Kimmeridgian - Tithonian | 10 m.y. bin: | Jurassic 5 - Jurassic 6 |
| Key time interval: | Kimmeridgian - Early Tithonian | ||
| Age range of interval: | 154.8 - 145.06 m.y. ago |
Stratigraphy
| Geological group: | Latady | Formation: | Hauberg Mountains | Member: | Novocin |
| Local section: | Jason Peninsula | Local bed: | R.6647 | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: "early Tithonian" is used in a local, Antarctic sense. It refers to the perisphinctid-dominated ammonite fauna which occurs in the lower levels of the extensive Himalia Ridge Formation, Fossil Bluff Group, Alexander Island. PJW: This should be the Novocin member of the Hauberg Mountains formation now, within the Latady Group. | |||||
Lithology and environment
| Primary lithology: | planar lamination,fine,medium,volcaniclastic,gray lithified sandstone | ||
| Lithology description: grey, grey-green and grey-brown sandstones | |||
| Environment: | foreshore | Tectonic setting: | back-arc basin |
Taphonomy
| Modes of preservation: | mold/impression,trace,recrystallized |
| Size of fossils: | macrofossils |
| Fragmentation: | frequent |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Collection method comments: all specimens are housed in the collections of the Geoscience Division, British Antarctic Survey, Cambridge | |
Metadata
| Database number: | 36767 | ||
| Authorizer: | M. Aberhan | Enterer: | S. Nurnberg |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2004-02-15 12:12:53 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2004-02-15 12:12:53 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 9854. | T. R. Riley, J. A. Crame, M. R. A. Thomson and D. J. Cantrill. 1997. Late Jurassic (Kimmeridgian-Tithonian) macrofossil assemblage from Jason Peninsula, Graham Land: evidence for a significant northward extension of the Latady Formation. Antarctic Science 9(4):434-442 [M. Aberhan/S. Nurnberg/S. Nurnberg] |
Secondary references:
| 89617 | M. A. Hunter and D. J. Cantrill. 2006. A new stratigraphy for the Latady Basin, Antarctic Peninsula: Part 2, Latady Group and basin evolution. Geological Magazine 143(6):797-819 [P. Wagner/P. Wagner] |