Saucedas: Late/Upper Campanian, Mexico
collected by C. Ifrim, W. Stinnesbeck 2008, 2012
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ammonitida
- Diplomoceratidae
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Solenoceras texanum
(Shumard 1861)
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Solenoceras elegans
Kennedy et al. 2000
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Oxybeloceras crassum
(Whitfield 1877)
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Diplomoceras cylindraceum
(Defrance 1816)
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Cephalopoda
- Ammonitida
- Nostoceratidae
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Didymoceras donezianum
(Michailov 1951)
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Nostoceras hyatti
Stephenson 1941
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Exiteloceras jenneyi
(Whitfield 1877)
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Bostrychoceras polyplocum
(Roemer 1841)
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Cephalopoda
- Ammonitida
- Baculitidae
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Baculites informal sp. 2
Lamarck 1799
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Baculites taylorensis
Adkins 1929
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Cephalopoda
- Ammonitida
- Scaphitidae
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Trachyscaphites sp.
Cobban and Scott 1964
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Cephalopoda
- Ammonitida
- Pachydiscidae
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Menuites sp.
Spath 1922
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Cephalopoda
- Phylloceratida
- Phylloceratidae
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Phyllopachyceras forbesianum
(d'Orbigny 1850)
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Cephalopoda
- Nautilida
- Nautilidae
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Eutrephoceras irritilasi
Ifrim et al. 2013
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| (2 measurements) | ||||||||||
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Malacostraca
- Decapoda
- Mathildellidae
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Prebranchioplax cretacica
Vega and Ahyong 2018
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Vega et al. 2018 | |||||||||
| see common names | ||||||||||
Geography
| Country: | Mexico | State/province: | Coahuila |
| Coordinates: | 25.7° North, 101.3° West (view map) | ||
| Paleocoordinates: | 31.9° North, 75.8° West | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
| Key time interval: | Late/Upper Campanian | ||
| Age range of interval: | 83.60000 - 72.10000 m.y. ago |
Stratigraphy
| Formation: | Parras | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Apparently the Saucedas assemblage, even though collected in a condensed sediment unit of <20 m thickness, covers three to four upper Campanian biozones and thus a long interval of time. | |||||
Lithology and environment
| Primary lithology: | concretionary,gray lithified silty "shale" |
| Lithology description: Dark grey silty shale alternating with occasional thin silty-sand layers. The fossils are concentrated in siliceous (carneol?) concretions and silicified lenses. | |
| Environment: | prodelta |
Taphonomy
| Modes of preservation: | mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (float) | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | C. Ifrim, W. Stinnesbeck | Collection dates: | 2008, 2012 |
| Collection method comments: Repository: Colección de Paleontología de Coahuila (CPC) at the Museo del Desierto, Saltillo, Coahuila, Mexico | |||
Metadata
| Database number: | 174742 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham, J. Fearon |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2015-11-26 10:16:11 | Last modified: | 2022-07-14 19:28:10 |
| Access level: | the public | Released: | 2015-11-26 10:16:11 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 57099. | C. Ifrim, W. Stinnesbeck, B. Espinosa and J. Flores Ventura. 2015. Upper Campanian (Upper Cretaceous) cephalopods from the Parras Shale near Saucedas, Coahuila, Mexico. Journal of South American Earth Sciences 64:229-257 [M. Clapham/M. Clapham/M. Clapham] |
Secondary references:
| 82167 | F. J. Vega, S. T. Ahyong, B. Espinosa, J. Flores-Ventura, L. Luna and A. H. González-González. 2018. Oldest record of Mathildellidae (Crustacea: Decapoda: Goneplacoidea) associated with Retroplumidae from the Upper Cretaceous of NE Mexico. Journal of South American Earth Sciences 82:62-75 [M. Clapham/J. Fearon] |