KT section Paso del Sapo, Canadón Asfalto Basin, SM68: Danian, Argentina
collected by Aberhan, M., Kiessling, W., Weidemeyer, S. 27032004
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
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Gastropoda indet.
Cuvier 1795
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4 individuals | ||||||
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Gastropoda
- Turritellidae
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Turritella malaspina
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10 individuals | ||||||
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Gastropoda
- Epitoniidae
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aff. Acirsa (Notacirsa) parvicostata
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1 individual | ||||||
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Gastropoda
- Naticidae
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Polinices (Polinella) cf. finlayi
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1 individual | ||||||
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Euspira cf. pueyrredonensis
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12 individuals | ||||||
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Gastropoda
- Neogastropoda
- Tudiclidae
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Heteroterma cf. tumida
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8 individuals | ||||||
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Gastropoda
- Neogastropoda
- Buccinidae
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aff. Colus delrioae
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15 individuals | ||||||
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Gastropoda
- Neogastropoda
- Melongenidae
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Fyfea lirata
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4 individuals | ||||||
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Gastropoda
- Neogastropoda
- Pseudolividae
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Pseudolividae informal sp. A
de Gregorio 1880
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6 individuals | ||||||
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Gastropoda
- Strombidae
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Strombidae informal sp. A
Rafinesque 1815
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5 individuals | ||||||
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Gastropoda
- Aporrhaidae
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Struthioptera aff. osiris
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19 individuals | ||||||
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Bivalvia
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Bivalvia indet.
Linnaeus 1758
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2 individuals | ||||||
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Bivalvia
- Cardiida
- Veneridae
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Meretrix chalcedonica
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1 individual | ||||||
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Bivalvia
- Hiatellida
- Hiatellidae
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Panopea informal sp. D
(Menard 1807)
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13 individuals | ||||||
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Bivalvia
- Carditida
- Astartidae
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Eriphyla meridiana
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55 individuals | ||||||
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Bivalvia
- Carditida
- Carditidae
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Venericardia iheringi
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35 individuals | ||||||
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Bivalvia
- Arcida
- Cucullaeidae
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Cucullaea (Cucullastis) barbara
Finlay and Marwick 1937
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7 individuals | ||||||
| see common names | |||||||
Geography
| Country: | Argentina | State/province: | Chubut |
| Coordinates: | 42.7° South, 70.0° West (view map) | ||
| Paleocoordinates: | 45.1° South, 58.9° West | ||
| Basis of coordinate: | unpublished field data | ||
| Geographic resolution: | small collection |
Time
| Period: | Paleogene | Epoch: | Paleocene |
| Stage: | Danian | 10 m.y. bin: | Cenozoic 1 |
| Key time interval: | Danian | ||
| Age range of interval: | 66.00000 - 61.60000 m.y. ago |
Stratigraphy
| Formation: | Lefipán | ||||
| Local section: | Estancia San Martin | Local bed: | 140.50 m | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: K/T boundary (basis of SM30) is at 0 m. Beds lumped over 1.50 m. Data from bed/horizon refers to midpoint of sampled beds. | |||||
Lithology and environment
| Primary lithology: | conglomerate | ||
| Includes fossils? | Y | ||
| Environment: | transition zone/lower shoreface | Tectonic setting: | foreland basin |
| Geology comments: inner shelf environment. | |||
Taphonomy
| Modes of preservation: | body,cast,mold/impression,original calcite,replaced with calcite |
| Size of fossils: | macrofossils,mesofossils |
| Preservation of anatomical detail: | good |
| Temporal resolution: | time-averaged |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection excludes: | all microfossils | ||
| Collection methods: | bulk,mechanical,field collection,observed (not collected) | ||
| Reason for describing collection: | paleoecologic analysis | ||
| Collectors: | Aberhan, M., Kiessling, W., Weidemeyer, S. | Collection dates: | 27.03.2004 |
Metadata
| Database number: | 74172 | ||
| Authorizer: | W. Kiessling | Enterer: | S. Weidemeyer |
| Modifier: | S. Weidemeyer | Research group: | marine invertebrate |
| Created: | 2007-07-26 09:39:24 | Last modified: | 2017-05-23 16:34:15 |
| Access level: | authorizer only | Released: | 2009-07-26 09:39:24 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 24819. | S. Weidemeyer. 2007. Molluscs at the K/Pg boundary in Argentina: Extinction and recovery patterns. unpublished Ph.D. thesis. [W. Kiessling/S. Weidemeyer] |