Vallecillo quarry (CPC collection): Early/Lower Turonian, Mexico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Malacostraca
- Isopoda
- Cymothoidae
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Mothocya vallecillae n. sp.
Stinnesbeck et al. 2022
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Stinnesbeck et al. 2022 | 1 specimen | ||||||||
| INAH-REG2544-PF196/CPC2798 | ||||||||||
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Cephalopoda
- Octobrachia
- Plesioteuthidae
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Boreopeltis ifrimae n. sp.
Fuchs and Stinnesbeck 2021
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Fuchs and Stinnesbeck 2021 | 2 specimens | ||||||||
| CPC 2796, 2797 | ||||||||||
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Reptilia
- Plesiosauria
- Polycotylidae
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Mauriciosaurus fernandezi n. gen., n. sp.
Frey et al. 2017
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1 specimen | |||||||||
| INAH CPC RFG 2544 P.F.1 a juvenile polycotylid plesiosaur with soft tissue preservation | ||||||||||
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Actinopteri
- Crossognathiformes
- Pachyrhizodontidae
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Goulmimichthys roberti
Blanco and Cavin 2003
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Stinnesbeck et al. 2022 | |||||||||
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Pachyrhizodus caninus
Cope 1872
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Giersch et al. 2010 | |||||||||
| see common names | ||||||||||
Geography
| Country: | Mexico | State/province: | Nuevo León |
| Coordinates: | 26.7° North, 100.0° West (view map) | ||
| Paleocoordinates: | 28.0° North, 69.0° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Turonian | 10 m.y. bin: | Cretaceous 6 |
| Key time interval: | Early/Lower Turonian | Ammonoid zone: | Pseudaspidoceras flexuosum |
| Age range of interval: | 93.90000 - 89.80000 m.y. ago |
Stratigraphy
| Formation: | Agua Nueva | Member: | Vallecillo Platy Limestone | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: late Early Turonian, thanks to the presence of the ammonite Mammites nodosoides | |||||
Lithology and environment
| Primary lithology: | planar lamination,very fine,ferruginous lithified "limestone" |
| Includes fossils? | Y |
| Lithology description: Cenomanian to Turonian Agua Nueva Formation, a dominantly carbonate unit comprising thick sequences of cyclic limestone and shale that are widely distributed in northeastern Mexico. | |
| Environment: | offshore |
| Geology comments: These strata were deposited in a moderately deep shelf of low relief, which were developed along the western coast of the Gulf of Mexico extending as far as the Western Interior of the United States of America and Gulf of Mexico Basin. Low oxygen. | |
Taphonomy
| Modes of preservation: | body |
| Lagerst�tten type: | conservation |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | excellent |
| Articulated whole bodies: | many |
| Fragmentation: | none |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | selective quarrying,observed (not collected) |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Repository: CPC, Colección Paleontológica de Coahuila of the Museo del Desierto in Saltillo, Coahuila | |
Metadata
| Database number: | 186284 | ||
| Authorizer: | V. Fischer, M. Clapham | Enterer: | V. Fischer, M. Clapham |
| Modifier: | M. Clapham | Research group: | vertebrate |
| Created: | 2017-06-19 14:11:34 | Last modified: | 2021-08-17 23:57:32 |
| Access level: | the public | Released: | 2017-06-19 14:11:34 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 62478. | E. Frey, E. W. A. Mulder, W. Stinnesbeck, H. E. Rivera-Sylva, J. M. Padilla-Gutiérrez and A. H. González-González. 2017. A new polycotylid plesiosaur with extensive soft tissue preservation from the early Late Cretaceous of northeast Mexico. Boletín de la Sociedad Geológica Mexicana 69(1):87-134 [V. Fischer/V. Fischer/M. Uhen] |
Secondary references:
| 77832 | D. Fuchs and W. Stinnesbeck. 2021. Large-sized gladius-bearing octobrachians (coleoid cephalopods) in the Turonian plattenkalk of Vallecillo, Mexico. Cretaceous Research 127(104949) [M. Clapham/M. Clapham] | |
| 77688 | S. Giersch, E. Frey, W. Stinnesbeck and A. H. González González. 2010. Pachyrhizodus caninus Cope, 1872 (Teleostei, Crossognathiformes) from the early Turonian of Vallecillo (Mexico) . Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 258:219-228 [M. Clapham/M. Clapham/M. Clapham] | |
| 78528 | E. S. Stinnesbeck, J. W. Wägele, F. Herder, J. Rust, and W. Stinnesbeck. 2022. A fish-parasitic isopod (Cymothoidae) on the pachyrhizodont Goulmimichthys roberti from the lower Turonian (Upper Cretaceous) Vallecillo plattenkalk, NE Mexico. Cretaceous Research 129(105019) [M. Clapham/M. Clapham/M. Clapham] |