Vallecillo quarry (Museo La Milarca collection): Early/Lower Turonian, Mexico
collected by Margarito A. González González
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ammonitida
- Acanthoceratidae
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Pseudaspidoceras pseudonodosoides
(Choffat 1898)
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Actinopteri
- Crossognathiformes
- Pachyrhizodontidae
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Goulmimichthys roberti
Blanco and Cavin 2003
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Actinopteri
- Aulopiformes
- Dercetidae
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Rhynchodercetis regio
Blanco and Alvarado-Ortega 2006
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| recombined as Hastichthys regio | ||||||||||
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Actinopteri
- Pycnodontiformes
- Pycnodontidae
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Paranursallia gutturosa
(Arambourg 1954)
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Chondrichthyes
- Lamniformes
- Aquilolamnidae
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Aquilolamna milarcae n. gen., n. sp.
Vullo et al. 2021
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1 specimen | |||||||||
| INAH 2544 P.F.17 | ||||||||||
| 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: | stated in text | ||
| 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 | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: The stratigraphic position of the specimen is indicated by the presence of the same slab of Pseudaspidoceras pseudonodosoides, an ammonite species which occurs only in the middle-upper Pseudaspidoceras flexuosum Zone at Vallecillo | |||||
Lithology and environment
| Primary lithology: | planar lamination lithified "limestone" |
| Includes fossils? | Y |
| Lithology description: Platy limestone | |
| Environment: | offshore |
Taphonomy
| Modes of preservation: | body,soft parts |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Collectors: | Margarito A. González González |
| Collection method comments: Repository: Museo La Milarca (San Pedro Garza García, Nuevo León State, Mexico) | |
Metadata
| Database number: | 219108 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | vertebrate |
| Created: | 2021-03-18 22:14:15 | Last modified: | 2021-03-18 22:14:15 |
| Access level: | the public | Released: | 2021-03-18 22:14:15 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 75932. | R. Vullo, E. Frey, C. Ifrim, M. A. González González, E. S. Stinnesbeck and W. Stinnesbeck. 2021. Manta-like planktivorous sharks in Late Cretaceous oceans. Science 371:1253-1256 [M. Clapham/M. Clapham] |