Los Altares: Middle Campanian - Late/Upper Campanian, Mexico

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Angiospermae - Gunnerales
Tricolpites sp. Couper 1953
Coniferales - Podocarpaceae
cf. Podocarpoxylon sp. Gothan 1905
Pinopsida - Pinales - Pinaceae
Pinuspollenites sp. Raatz 1938
Magnoliopsida
Tricolporites sp. Cookson 1947
Chondrichthyes - Hybodontiformes - Hybodontidae
Hybodus sp. Agassiz 1834
Cope et al. 2003
Chondrichthyes - Rajiformes
Squatirhina sp. Casier 1947
Westgate et al. 2002
Protoplatyrhina sp. Case 1978
Westgate et al. 2002
Chondrichthyes - Rajiformes - Rhinobatidae
Rhinobatos sp. Link 1790
Cope et al. 2003
Chondrichthyes - Rajiformes - Ptychotrygonidae
Ptychotrygon sp. Jaekel 1894
Cope et al. 2003
Chondrichthyes - Rajiformes - Sclerorhynchidae
Ischyrhiza sp. Leidy 1856
Cope et al. 2003
Chondrichthyes - Orectolobiformes - Ginglymostomatidae
Ginglymostoma sp. Müller and Henle 1838
Cope et al. 2003
Chondrichthyes - Orectolobiformes - Orectolobidae
Cretorectolobus sp. Case 1978
Cope et al. 2003
Chondrichthyes - Orectolobiformes - Hemiscylliidae
Chiloscyllium sp. Müller and Henle 1837
Cope et al. 2003
Chondrichthyes - Lamniformes - Odontaspididae
Odontaspis sp. Agassiz 1838
Cope et al. 2003
Chondrichthyes - Lamniformes - Carchariidae
Carcharias sp. Rafinesque 1810
Cope et al. 2003
Chondrichthyes - Lamniformes - Anacoracidae
Squalicorax sp. Whitley 1939
Westgate et al. 2002
Squalicorax cf. bassanii
Cope et al. 2003
Chondrichthyes - Lamniformes - Mitsukurinidae
Scapanorhynchus sp. Woodward 1889
Westgate et al. 2002
Chondrichthyes - Lamniformes - Otodontidae
Cretolamna sp. Glikman 1958
Westgate et al. 2002
Reptilia - Nodosauridae
Nodosauridae indet. Marsh 1890
Ramírez-Velasco and Hernández-Rivera 2015 1 specimen
osteoderm (IGM)
Reptilia - Ceratopsidae
Ceratopsidae indet. Marsh 1888
Ramírez-Velasco and Hernández-Rivera 2015 3 specimens
dorsal vertebra, 2 caudals (IGM)
Chasmosaurus mariscalensis Lehman 1989
1 specimen
recombined as Agujaceratops mariscalensis
L squamosa, epioccipitals, supraorbital horn core (IGM)
Reptilia - Hadrosauridae
Hadrosauridae indet. Cope 1869
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
Titanosauria indet. Bonaparte and Coria 1993
Ramírez-Velasco and Hernández-Rivera 2015 1 specimen
R tibia (INEGI)
Actinopteri - Amiiformes - Amiidae
Amiidae indet. Huxley 1861
Cope et al. 2003
Actinopteri - Aulopiformes - Enchodontidae
Enchodus sp. Agassiz 1835
Cope et al. 2003
Actinopteri - Tetraodontiformes - Eotrigonodontidae
"Stephanodus" sp. Zittel 1883
Cope et al. 2003
Actinopteri - Elopiformes - Phyllodontidae
Phyllodontidae indet. Sauvage 1875
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]