Los Altares: Middle Campanian - Late/Upper Campanian, Mexico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Angiospermae
- Gunnerales
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Tricolpites sp.
Couper 1953
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Coniferales
- Podocarpaceae
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cf. Podocarpoxylon sp.
Gothan 1905
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Pinopsida
- Pinales
- Pinaceae
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Pinuspollenites sp.
Raatz 1938
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Magnoliopsida
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Tricolporites sp.
Cookson 1947
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Chondrichthyes
- Hybodontiformes
- Hybodontidae
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Hybodus sp.
Agassiz 1834
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Cope et al. 2003 | |||||||||
Chondrichthyes
- Rajiformes
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Squatirhina sp.
Casier 1947
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Westgate et al. 2002 | |||||||||
Protoplatyrhina sp.
Case 1978
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Westgate et al. 2002 | |||||||||
Chondrichthyes
- Rajiformes
- Rhinobatidae
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Rhinobatos sp.
Link 1790
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Cope et al. 2003 | |||||||||
Chondrichthyes
- Rajiformes
- Ptychotrygonidae
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Ptychotrygon sp.
Jaekel 1894
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Cope et al. 2003 | |||||||||
Chondrichthyes
- Rajiformes
- Sclerorhynchidae
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Ischyrhiza sp.
Leidy 1856
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Cope et al. 2003 | |||||||||
Chondrichthyes
- Orectolobiformes
- Ginglymostomatidae
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Ginglymostoma sp.
Müller and Henle 1838
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Cope et al. 2003 | |||||||||
Chondrichthyes
- Orectolobiformes
- Orectolobidae
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Cretorectolobus sp.
Case 1978
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Cope et al. 2003 | |||||||||
Chondrichthyes
- Orectolobiformes
- Hemiscylliidae
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Chiloscyllium sp.
Müller and Henle 1837
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Cope et al. 2003 | |||||||||
Chondrichthyes
- Lamniformes
- Odontaspididae
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Odontaspis sp.
Agassiz 1838
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Cope et al. 2003 | |||||||||
Chondrichthyes
- Lamniformes
- Carchariidae
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Carcharias sp.
Rafinesque 1810
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Cope et al. 2003 | |||||||||
Chondrichthyes
- Lamniformes
- Anacoracidae
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Squalicorax sp.
Whitley 1939
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Westgate et al. 2002 | |||||||||
Squalicorax cf. bassanii
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Cope et al. 2003 | |||||||||
Chondrichthyes
- Lamniformes
- Mitsukurinidae
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Scapanorhynchus sp.
Woodward 1889
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Westgate et al. 2002 | |||||||||
Chondrichthyes
- Lamniformes
- Otodontidae
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Cretolamna sp.
Glikman 1958
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Westgate et al. 2002 | |||||||||
Reptilia
- Nodosauridae
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Nodosauridae indet.
Marsh 1890
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Ramírez-Velasco and Hernández-Rivera 2015 | 1 specimen | ||||||||
osteoderm (IGM) | ||||||||||
Reptilia
- Ceratopsidae
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Ceratopsidae indet.
Marsh 1888
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Ramírez-Velasco and Hernández-Rivera 2015 | 3 specimens | ||||||||
dorsal vertebra, 2 caudals (IGM) | ||||||||||
Chasmosaurus mariscalensis
Lehman 1989
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1 specimen | |||||||||
recombined as Agujaceratops mariscalensis | ||||||||||
L squamosa, epioccipitals, supraorbital horn core (IGM) | ||||||||||
Reptilia
- Hadrosauridae
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Hadrosauridae indet.
Cope 1869
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Ramírez-Velasco and Hernández-Rivera 2015 | 1 specimen | ||||||||
dorsal, sacrum and caudal vertebrae, neural archs, proximal end tibia and humerus, and right fibula (INEGI) | ||||||||||
Reptilia
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Titanosauria indet.
Bonaparte and Coria 1993
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Ramírez-Velasco and Hernández-Rivera 2015 | 1 specimen | ||||||||
R tibia (INEGI) | ||||||||||
Actinopteri
- Amiiformes
- Amiidae
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Amiidae indet.
Huxley 1861
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Cope et al. 2003 | |||||||||
Actinopteri
- Aulopiformes
- Enchodontidae
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Enchodus sp.
Agassiz 1835
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Cope et al. 2003 | |||||||||
Actinopteri
- Tetraodontiformes
- Eotrigonodontidae
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"Stephanodus" sp.
Zittel 1883
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Cope et al. 2003 | |||||||||
Actinopteri
- Elopiformes
- Phyllodontidae
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Phyllodontidae indet.
Sauvage 1875
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Cope et al. 2003 | |||||||||
see common names |
Geography
Country: | Mexico | State/province: | Chihuahua |
Coordinates: | 28.9° North, 103.4° West (view map) | ||
Paleocoordinates: | 35.4° North, 77.0° West | ||
Basis of coordinate: | stated in text | ||
Geographic resolution: | small collection |
Time
Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
Key time interval: | Middle Campanian - Late/Upper Campanian | ||
Age range of interval: | 83.50000 - 70.60000 m.y. ago |
Stratigraphy
Formation: | Aguja | ||||
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: upper part of Aguja Formation |
Lithology and environment
Primary lithology: | mudstone |
Secondary lithology: | sandstone |
Includes fossils? | Y |
Includes fossils? | Y |
Environment: | marine indet. |
Geology comments: "marine" |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
Collection excludes: | some genera,species names |
Collection methods: | bulk,sieve,field collection |
Reason for describing collection: | general faunal/floral analysis |
Collection method comments: "bulk-sampled" |
Metadata
Also known as: | Manuel Benavides | ||
Database number: | 35353 | ||
Authorizer: | J. Alroy, M. Carrano | Enterer: | J. Alroy, M. Carrano |
Modifier: | M. Carrano | Research group: | vertebrate |
Created: | 2003-12-04 14:46:30 | Last modified: | 2022-09-23 11:26:53 |
Access level: | the public | Released: | 2003-12-04 14:46:30 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
82641. | P. Andrade-Ramos and M. Montellano-Ballesteros. 2002. A Late Cretaceous association from Altares, Chihuahua state, Mexico. Journal of Vertebrate Paleontology 22(3 (suppl.)):32A [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
9536 | D. Cope, B. England, R. B. Brown, J. Westgate, and J. Pittman. 2003. A Late Cretaceous (Campanian) marine vertebrate microfauna from the Aguja Formation of Chihuahua, Mexico. Journal of Vertebrate Paleontology 23(3):42A [J. Alroy/J. Alroy/J. Alroy] | |
82620 | Á A. Ramírez-Velasco and R. Hernández-Rivera. 2015. Diversity of Late Cretaceous dinosaurs from Mexico. Boletín Geológico y Minero 126(1):63-108 [M. Carrano/M. Carrano] | |
82688 | J. Westgate, J. Pittman, R. B. Brown and D. Cope. 2002. Continued excavation of the first dinosaur community from Chihuahua, Mexico. Journal of Vertebrate Paleontology 22(3 (suppl.)):118A [M. Carrano/M. Carrano] |