Los Altares (Cretaceous to of Mexico)

Also known as Manuel Benavides

Where: Chihuahua, Mexico (28.9° N, 103.4° W: paleocoordinates 35.4° N, 77.0° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Aguja Formation, Middle Campanian to Middle Campanian (83.5 - 70.6 Ma)

• upper part of Aguja Formation

• group of beds-level stratigraphic resolution

Environment/lithology: marine; mudstone and sandstone

• "marine"

Size classes: macrofossils, mesofossils

Collection methods: bulk, sieve,

• "bulk-sampled"

Primary reference: 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]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 35353: authorized by John Alroy, entered by John Alroy on 04.12.2003, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Magnoliopsida
  -
Tricolporites sp. Cookson 1947
Angiospermae
 Gunnerales -
Tricolpites sp. Couper 1953
 Coniferales - Podocarpaceae
cf. Podocarpoxylon sp. Gothan 1905 podocarp
Pinopsida
 Pinales - Pinaceae
Reptilia
 Saurischia -
Titanosauria indet.2 Bonaparte and Coria 1993 sauropod
R tibia (INEGI)
 Ornithischia - Nodosauridae
Nodosauridae indet.2 Marsh 1890 ankylosaur
osteoderm (IGM)
 Ornithischia - Ceratopsidae
Ceratopsidae indet.2, "Chasmosaurus mariscalensis" = Agujaceratops mariscalensis
Ceratopsidae indet.2 Marsh 1888 ceratopsid
dorsal vertebra, 2 caudals (IGM)
"Chasmosaurus mariscalensis" = Agujaceratops mariscalensis Lehman 1989 Aguja horned face
L squamosa, epioccipitals, supraorbital horn core (IGM)
 Ornithischia - Hadrosauridae
Hadrosauridae indet.2 Cope 1869 hadrosaurid
dorsal, sacrum and caudal vertebrae, neural archs, proximal end tibia and humerus, and right fibula (INEGI)
Actinopteri
 Amiiformes - Amiidae
Amiidae indet.1 Huxley 1861 bowfin
 Elopiformes - Phyllodontidae
Phyllodontidae indet.1 Sauvage 1875
 Aulopiformes - Enchodontidae
Enchodus sp.1 Agassiz 1835
 Tetraodontiformes - Eotrigonodontidae
"Stephanodus" sp.1 Zittel 1883
Chondrichthyes
 Hybodontiformes - Hybodontidae
Hybodus sp.1 Agassiz 1834 elasmobranch
 Orectolobiformes - Hemiscylliidae
Chiloscyllium sp.1 Müller and Henle 1837 carpet shark
 Orectolobiformes - Orectolobidae
Cretorectolobus sp.1 Case 1978 wobbegong
 Orectolobiformes - Ginglymostomatidae
Ginglymostoma sp.1 Müller and Henle 1838 nurse shark
 Lamniformes - Odontaspididae
Odontaspis sp.1 Agassiz 1838 sand tiger shark
 Lamniformes - Mitsukurinidae
Scapanorhynchus sp.3 Woodward 1889 goblin shark
 Lamniformes - Otodontidae
Cretolamna sp.3 Glikman 1958 mackerel shark
 Lamniformes - Anacoracidae
Squalicorax sp.3 Whitley 1939 crow shark
 Lamniformes - Carchariidae
Carcharias sp.1 Rafinesque 1810 sand shark
 Rajiformes -
Squatirhina sp.3 Casier 1947 ray
 Rajiformes - Sclerorhynchidae
Ischyrhiza sp.1 Leidy 1856 ray
 Rajiformes - Ptychotrygonidae
Ptychotrygon sp.1 Jaekel 1894 ray
 Rajiformes -
Protoplatyrhina sp.3 Case 1978 guitarfish
 Rajiformes - Rhinobatidae
Rhinobatos sp.1 Link 1790 guitarfish