Unit A (0-70 m) [Lopez de Bertodano Fm]: Early/Lower Maastrichtian, Antarctica
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Austrocucullaea oliveroi
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Echinoidea
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Echinoidea indet.
(Leske 1778)
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| Listed as "Equinoidea" | ||||||||||
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Polychaeta
- Sabellida
- Serpulidae
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Rotularia dorsolaevis
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Rotularia sp.
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Cephalopoda
- Ammonitida
- Tetragonitidae
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Pseudophyllites loryi
(Kilian and Reboul 1909)
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Cephalopoda
- Ammonitida
- Kossmaticeratidae
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Kossmaticeratidae indet.
Spath 1922
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? Maorites sp.
Marshall 1926
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Jacobites cf. crofti
Spath 1953
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Gunnarites antarcticus
(Weller 1903)
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Cephalopoda
- Ammonitida
- Diplomoceratidae
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Diplomoceras lambi
Spath 1953
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| synonym of Diplomoceras cylindraceum | ||||||||||
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Cephalopoda
- Nautilida
- Nautilidae
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Eutrephoceras sp.
Hyatt 1894
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Gastropoda
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Gastropoda indet.
Cuvier 1795
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Gastropoda
- Naticidae
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Eunaticina arctowskiana
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Gastropoda
- Aporrhaidae
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Perissoptera sp.
Tate 1865
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Gastropoda
- Opisthobranchia
- Cylichnidae
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Scaphander sp.
Monfort 1810
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Bivalvia
- Pholadomyida
- Pholadomyidae
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Pholadomya gracilis
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Bivalvia
- Thraciida
- Thraciidae
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Thracia sp.
Blainville 1824
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Bivalvia
- Hiatellida
- Hiatellidae
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Panopea sp.
(Menard 1807)
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Panopea clausa
(Wilckens 1910)
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Bivalvia
- Cardiida
- Veneridae
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? Cyclorisma sp.
Dall 1902
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Bivalvia
- Cardiida
- Lahillidae
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Lahillia sp.
Cossmann 1899
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Bivalvia
- Carditida
- Astartidae
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Eriphyla sp.
Gabb 1864
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Bivalvia
- Trigoniida
- Laevitrigoniidae
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Eselaevitrigonia regina
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| spelled with current rank as Laevitrigonia (Eselaevitrigonia) | ||||||||||
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Bivalvia
- Trigoniida
- Trigoniidae
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Oistotrigonia pygoscelium
(Wilckens 1910)
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Bivalvia
- Mytilida
- Mytilidae
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Modiolus pontotocensis
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Bivalvia
- Pectinida
- Entoliidae
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Entolium sp.
(Meek 1865)
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Bivalvia
- Ostreida
- Pinnidae
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Pinna sp.
Linnaeus 1758
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Bivalvia
- Ostreida
- Gryphaeidae
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Pycnodonte cf. vesiculosa
(Sowerby 1822)
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| recombined as Pycnodonte (Phygraea) vesicularis vesiculosa | ||||||||||
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Bivalvia
- Arcida
- Parallelodontidae
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Nordenskjoldia nordenskjoldi
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| spelled with current rank as Grammatodon (Nordenskjoldia) | ||||||||||
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Bivalvia
- Arcida
- Cucullaeidae
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Cucullaea antarctica
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Cucullaea sp.
Lamarck 1801
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unclassified
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Brachiopoda indet.
Cuvier 1805
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Malacostraca
- Decapoda
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Decapoda indet.
Latreille 1802
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Thecostraca
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Cirripedia indet.
Rafinesque 1816
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Anthozoa
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Anthozoa indet.
Ehrenberg 1834
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| Listed as "Solitary coral" | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Antarctica |
| Coordinates: | 64.2° South, 57.8° West (view map) |
| Paleocoordinates: | 62.5° South, 68.2° West |
| Basis of coordinate: | stated in text |
| Geographic resolution: | local area |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Maastrichtian | 10 m.y. bin: | Cretaceous 8 |
| Key time interval: | Early/Lower Maastrichtian | ||
| Age range of interval: | 72.10000 - 66.00000 m.y. ago |
Stratigraphy
| Formation: | Lopez de Bertodano | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Lopez de Bertodano Fm, which is unconformably overlain by glacigenic diamictites and by the James Ross Island Volcanic Group. AGE: Early Maastrichtian, on the basis of ammonite biostratigraphy. STRATIGRAPHIC POSITION: From a the lower (0-70 m) part of Unit A. | |||||
Lithology and environment
| Primary lithology: | lithified silty sandstone |
| Secondary lithology: | lithified sandstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Silty sandstones and sandstones. LITHIFICATION: Poorly lithified, on the basis of figured images. | |
| Environment: | coastal indet. |
| Geology comments: ENVIRONMENT: Shallow siliciclastic marine setting. | |
Taphonomy
| Modes of preservation: | body,cast,mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (in situ),field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Collection method comments: COLLECTOR: E. B. Olivero, D. R. Martinioni, and F. J. Mussel. REPOSITORY: Not stated, but presumably the Centro de Investigaciones en Recurso Geologicos (CIRGEO).. | |
| Taxonomic list comments:COVERAGE: COVERAGE: Exhaustive for ammonoidea, bivalvia, and gastropoda. Other taxa listed under coarser taxonomic groupings. NOMENCLATURE: Not an authoritative publication, but with fairly modern nomenclature and species-resolution identifications where listed. | |
Metadata
| Database number: | 83550 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2008-08-22 07:14:51 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2008-08-22 07:14:51 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 28030. | E. B. Olivero, D. R. Martinioni, and F. J. 1992. Upper Cretaceous sedimentology and biostratigraphy of western Cape Lamb (Vega Island, Antarctica). Implications of sedimentary cycles and evolution of the basin. Geologia de la Isla James Ross 47-166 [A. Hendy/A. Hendy] |