Eocene Erratics: Mt. Discovery, McMurdo Sound: Late/Upper Eocene, Antarctica
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Odontopterygiformes
- Pelagornithidae
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Pelagornithidae indet.
Fürbringer 1888
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Jones 2000 | 1 specimen | ||||||||
| found in boulder A303 | ||||||||||
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Reptilia
- Crocodilia
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Crocodilia indet.
Owen 1842
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Willis and Stilwell 2000 | 1 specimen | ||||||||
| spelled with current rank as Crocodylia | ||||||||||
| found in boulder E312 | ||||||||||
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Actinopteri
- Gadiformes
- Gadidae
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Gadidae indet.
Rafinesque 1810
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Long and Stilwell 2000 | 1 element | ||||||||
| Site T, E372 | ||||||||||
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Chondrichthyes
- Carcharhiniformes
- Triakidae
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Galeorhinus sp.
de Blainville and Prévost 1816
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Long and Stilwell 2000 | 1 element | ||||||||
| Site T, E145 | ||||||||||
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Chondrichthyes
- Lamniformes
- Mitsukurinidae
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Carcharias cf. macrota
(Agassiz 1838)
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Long and Stilwell 2000 | 2 elements | ||||||||
| original and current combination Otodus macrotus | ||||||||||
| Site T, E145, Site J. E151 | ||||||||||
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Gastropoda
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Gastropoda indet.
Cuvier 1795
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Willis and Stilwell 2000 | |||||||||
| found in boulder E312 | ||||||||||
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Bivalvia
- Cardiida
- Veneridae
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"Eurhomalea" claudiae
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Willis and Stilwell 2000 | |||||||||
| found in boulder E312 | ||||||||||
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Malacostraca
- Decapoda
- Callianassidae
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Callianassa symmetricus n. sp.
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Feldmann and Zinsmeister 1984 | |||||||||
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Thecostraca
- Balanomorpha
- Austrobalanidae
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Austrobalanus antarcticus n. sp.
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| see common names | ||||||||||
Geography
| Country: | Antarctica |
| Coordinates: | 78.4° South, 165.0° East (view map) |
| Paleocoordinates: | 78.9° South, 157.3° East |
| Basis of coordinate: | based on nearby landmark |
Time
| Period: | Paleogene | Epoch: | Eocene |
| Stage: | Priabonian | 10 m.y. bin: | Cenozoic 3 |
| Key time interval: | Late/Upper Eocene | ||
| Age range of interval: | 37.71000 - 33.90000 m.y. ago |
Stratigraphy
| Stratigraphy comments: Bartonian to Early Priabonian |
Lithology and environment
| Lithology description: Isolated erratics of arkosic grits derived from weathering and erosion of ancient granitic and gabbroic rocks. Medium to light grey-brown, poorly sorted, moderately indurated, arkosic grits. | |
| Environment: | marine indet. |
| Geology comments: Inferences of shallow, warm water conditions. | |
Taphonomy
| Modes of preservation: | body,original calcite |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | variable |
| Fragmentation: | frequent |
Collection methods and comments
| Collection excludes: | all microfossils,some macrofossils |
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: All collections made by Jeffrey D. Stilwell and party, University of Nebraska-Lincoln Expeditions (1993-1995). | |
| Taxonomic list comments:Reported mollusks, dinoflagellates, and pollen are not included in the taxonomic list. | |
Metadata
| Database number: | 43030 | ||
| Authorizer: | L. Ivany, M. Uhen | Enterer: | C. Visaggi, M. Uhen |
| Modifier: | C. Visaggi | Research group: | marine invertebrate |
| Created: | 2004-08-09 12:03:15 | Last modified: | 2004-08-09 15:06:24 |
| Access level: | the public | Released: | 2004-08-09 12:03:15 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 11406. | 1% | J. S. Buckeridge. 2000. A new species of Austrobalanus (Cirripedia, Thoracia) from Eocene erratics, Mount Discovery, McMurdo Sound, East Antarctica. Antarctic Research Series 76:329-333 [L. Ivany/C. Visaggi/C. Visaggi] |
Secondary references:
| 71652 | R. Feldmann and W. J. Zinsmeister. 1984. First Occurrence of Fossil Decapod Crustaceans (Callianassidae) from the McMurdo Sound Region, Antarctica. Journal of Paleontology 58(4):1041-1045 [M. Uhen/M. Uhen] | |
| 19820 | C. M. Jones. 2000. The first record of a fossil bird from East Antarctica. Paleobiology and Paleoenvironments of Eocene Rocks, McMurdo Sound, East Antarctica. Antarctic Research Series. 76:359-364 [M. Uhen/M. Uhen/M. Uhen] | |
| 19822 | D. J. Long and J. D. Stilwell. 2000. Fish remains from the Eocene of Mount Discovery, East Antarctica. Paleobiology and Paleoenvironments of Eocene Rocks, McMurdo Sound, East Antarctica. Antarctic Research Series 76:349-353 [M. Uhen/M. Uhen/M. Uhen] | |
| 19823 | C. E. Schweitzer and R. M. Feldmann. 2000. Callichirus? symmetricus (Decapoda: Thalassinoidea) and associated burrows, Eocene, Antarctica. Paleobiology and Paleoenvironments of Eocene Rocks, McMurdo Sound, East Antarctica. Antarctic Research Series. 76:335-347 [M. Uhen/M. Uhen] | |
| 19818 | 5% 53400 | P. M. A. Willis and J. D. Stilwell. 2000. A probable piscivorous crocodile from Eocene deposits of McMurdo Sound, East Antarctica. Paleobiology and Paleoenvironments of Eocene Rocks, McMurdo Sound, East Antarctica . Antarctic Research Series 76:355-358 [M. Uhen/M. Uhen/M. Uhen] |