KT section Paso del Sapo, Canadón Asfalto Basin, SM18: Maastrichtian, Argentina
collected by Aberhan, M., Kiessling, W., Scholz, H., Medina, F. A. 03042003
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Gastropoda
|
|||||||
|
Gastropoda indet.
Cuvier 1795
|
6 individuals | ||||||
|
Gastropoda
- Naticidae
|
|||||||
|
Euspira cf. pueyrredonensis
|
2 individuals | ||||||
|
Gastropoda
- Neogastropoda
- Tudiclidae
|
|||||||
|
Heteroterma informal sp. A
Gabb 1869
|
1 individual | ||||||
|
Gastropoda
- Aporrhaidae
|
|||||||
|
Struthioptera cf. haastiana
|
4 individuals | ||||||
|
Austroaporrhais cf. gregaria
|
1 individual | ||||||
|
Bivalvia
|
|||||||
|
Bivalvia indet.
Linnaeus 1758
|
1 individual | ||||||
|
Bivalvia
- Nuculanida
- Malletiidae
|
|||||||
|
Neilo sp.
Adams 1854
|
1 individual | ||||||
|
Bivalvia
- Mytilida
- Mytilidae
|
|||||||
|
Modiolus informal sp. B
(Lamarck 1801)
|
1 individual | ||||||
|
Bivalvia
- Cardiida
- Tellinidae
|
|||||||
|
Solyma cf. levis
|
3 individuals | ||||||
|
Bivalvia
- Cardiida
- Veneridae
|
|||||||
|
Mesocallista aff. solitaria
|
2 individuals | ||||||
|
Bivalvia
- Carditida
- Carditidae
|
|||||||
|
Venericardia iheringi
|
2 individuals | ||||||
|
Bivalvia
- Trigoniida
- Trigoniidae
|
|||||||
|
Pterotrigonia (Rinetrigonia) windhauseniana
(Wilckens 1921)
|
1 individual | ||||||
| original and current combination Trigonia windhauseniana | |||||||
| see common names | |||||||
Geography
| Country: | Argentina | State/province: | Chubut |
| Coordinates: | 42.7° South, 70.0° West (view map) | ||
| Paleocoordinates: | 44.8° South, 58.4° West | ||
| Basis of coordinate: | unpublished field data | ||
| Geographic resolution: | small collection |
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: | Lefipán | ||||
| Local section: | Estancia San Martin | Local bed: | -31.20 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 1.10 m. Data from bed/horizon refers to midpoint of sampled beds. | |||||
Lithology and environment
| Primary lithology: | black mudstone | ||
| 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., Scholz, H., Medina, F. A. | Collection dates: | 03.04.2003 |
| Taxonomic list comments:Echinoid plates were reported but not included. | |||
Metadata
| Database number: | 74119 | ||
| Authorizer: | W. Kiessling | Enterer: | S. Weidemeyer |
| Modifier: | S. Weidemeyer | Research group: | marine invertebrate |
| Created: | 2007-07-23 10:30:10 | Last modified: | 2017-05-23 16:34:15 |
| Access level: | authorizer only | Released: | 2009-07-23 10:30:10 |
| 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] |