Station 378 [Lopez de Bertodano Fm]: Maastrichtian, Antarctica
collected by Macellari
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ammonitida
- Kossmaticeratidae
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Maorites densicostatus
(Kilian and Reboul 1909)
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| (2 measurements) | ||||||||||
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Cephalopoda
- Ammonitida
- Pachydiscidae
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Pachydiscus (Pachydiscus) riccardi
Macellari 1986
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| recombined as Pachydiscus riccardi | ||||||||||
| (1 measurement) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Antarctica |
| Coordinates: | 64.3° South, 56.8° West (view map) |
| Paleocoordinates: | 62.5° South, 67.5° West |
| Basis of coordinate: | stated in text |
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Maastrichtian | 10 m.y. bin: | Cretaceous 8 |
| Key time interval: | Maastrichtian | ||
| Age range of interval: | 72.10000 - 66.00000 m.y. ago |
Stratigraphy
| Formation: | Lopez de Bertodano | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Lopez de Bertodano Fm, which is unconformably overlain by the Sobral Fm (Danian). AGE: Early-Late Maastrichtian, on the basis of ammonite biostratigraphy; upper part of the Pachydiscus ootacodensis-P. ultimus zones. STRATIGRAPHIC POSITION: From unknown position in formation. | |||||
Lithology and environment
| Primary lithology: | unlithified sandy siltstone |
| Secondary lithology: | lithified calcareous sandstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Monotonous sequence of very friable sandy siltstones with intercalations of more indurated calcareous horizons. LITHIFICATION: | |
| Environment: | offshore |
| Geology comments: ENVIRONMENT: Offshore siliciclastic marine setting. | |
Taphonomy
| Modes of preservation: | body,cast,mold/impression |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | good |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | surface (float),surface (in situ),field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | OSU |
| Collectors: | Macellari |
| Collection method comments: COLLECTOR: C. E. Macellari. REPOSITORY: Ohio State University | |
| Taxonomic list comments:COVERAGE: Exhaustive for ammonoidea. Other groups (gastropods, bivalves, annelids) are present but not listed in text. These are reported by Macellari (1984), PBDB# 17985. | |
Metadata
| Database number: | 82982 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2008-08-05 06:24:08 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2008-08-05 06:24:08 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 27873. | C. E. Macellari. 1986. Late Campanian-Maastrichtian ammonite fauna from Seymour Island (Antarctic Peninsula). The Paleontological Society Memoir 18:1-59 [A. Hendy/A. Hendy] |