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El Gallo, Ensenada Municipality, Baja California, Mexico

FormationEl Gallo
Member(s)El Diesacado
El Disecado
Age:83.5 - 70.6 Ma
Late/Upper Cretaceous
IntervalLate Campanian
Lithologypackstone
Number of Collections11
Number of Occurrences17

Recorded Sample Locations

LocationRegionStratigraphic Name
El RosarioEnsenada Municipality, Baja California, MexicoEl Gallo
Punta San Ysidro North Ensenada Municipality, Baja California, MexicoEl Gallo
Arroyo El Rosario Ensenada Municipality, Baja California, MexicoEl Gallo - El Diesacado
El Jabón ravineEnsenada Municipality, Baja California, MexicoEl Gallo - El Disecado
southwest of El RosarioEnsenada Municipality, Baja California, MexicoEl Gallo - El Disecado
El Rosario ArribaEnsenada Municipality, Baja California, MexicoEl Gallo - El Diesacado
LACM Loc. 7257Ensenada Municipality, Baja California, MexicoEl Gallo - El Diesacado
EveliaEnsenada Municipality, Baja California, MexicoEl Gallo
ScorpioEnsenada Municipality, Baja California, MexicoEl Gallo
MotherloadEnsenada Municipality, Baja California, MexicoEl Gallo
ROS 51Ensenada Municipality, Baja California, MexicoEl Gallo
TortugarioEnsenada Municipality, Baja California, MexicoEl Gallo
Fiesta de los HuesosEnsenada Municipality, Baja California, MexicoEl Gallo
OKEnsenada Municipality, Baja California, MexicoEl Gallo

Associated Units

Stratigraphic NameAgeLithologyOccurrence Records
Alisitos112 - 101 Ma
Early/Lower Cretaceous
limestone, "siliciclastic", sandstone6
El Gallo - El Diesacado83.5 - 70.6 Ma
Late/Upper Cretaceous
4
El Gallo - El Disecado83.5 - 70.6 Ma
Late/Upper Cretaceous
mudstone, sandstone/siltstone2
La Bocana Roja86.3 - 70.6 Ma
Late/Upper Cretaceous
mudstone5

Recorded Fossils

Accepted NameHierarchyAge
Stygimys sp.
genus
6Animalia : Chordata : Mammalia : Eucosmodontidae : Stygimys83.5 - 70.6 Ma
Late/Upper Cretaceous
Mesodma formosa
species
7Animalia : Chordata : Mammalia : Multituberculata : Neoplagiaulacidae : Mesodma : Mesodma formosa83.5 - 70.6 Ma
Late/Upper Cretaceous
Pediomyidae
unranked clade
99Animalia : Chordata : Mammalia : Pediomyidae83.5 - 70.6 Ma
Late/Upper Cretaceous
Gallolestes pachymandibularis
species
7Animalia : Chordata : Mammalia : Pilosa : Didymoconidae : Gallolestes : Gallolestes pachymandibularis83.5 - 70.6 Ma
Late/Upper Cretaceous
Hadrosauridae
family
5Animalia : Chordata : Reptilia : Dinosauria : Hadrosauridae83.5 - 70.6 Ma
Late/Upper Cretaceous
Magnapaulia laticaudus
species
7Animalia : Chordata : Ornithischia : Hadrosauridae : Magnapaulia : Magnapaulia laticaudus83.5 - 70.6 Ma
Late/Upper Cretaceous
Nodosauridae
family
5Animalia : Chordata : Ornithischia : Nodosauridae83.5 - 70.6 Ma
Late/Upper Cretaceous
Scotiophryne sp.
genus
6Animalia : Chordata : Osteichthyes : Anura : Scotiophryne83.5 - 70.6 Ma
Late/Upper Cretaceous
Dicothodon bajaensis
species
7Animalia : Chordata : Reptilia : Squamata : Polyglyphanodontidae : Dicothodon : Dicothodon bajaensis83.5 - 70.6 Ma
Late/Upper Cretaceous
Naomichelys sp.
genus
6Animalia : Chordata : Reptilia : Testudines : Solemydidae : Naomichelys83.5 - 70.6 Ma
Late/Upper Cretaceous
Naomichelys speciosa
species
7Animalia : Chordata : Reptilia : Testudines : Solemydidae : Naomichelys : Naomichelys speciosa83.6 - 72.1 Ma
Late/Upper Cretaceous
Chelydridae
family
5Animalia : Chordata : Reptilia : Testudines : Chelydridae83.6 - 72.1 Ma
Late/Upper Cretaceous
Basilemys sp.
genus
6Animalia : Chordata : Reptilia : Testudines : Nanhsiungchelyidae : Basilemys83.6 - 72.1 Ma
Late/Upper Cretaceous
Compsemys victa
species
7Animalia : Chordata : Reptilia : Testudines : Compsemydidae : Compsemys : Compsemys victa83.6 - 72.1 Ma
Late/Upper Cretaceous
Trionychidae
family
5Animalia : Chordata : Reptilia : Testudines : Trionychidae83.6 - 72.1 Ma
Late/Upper Cretaceous
Tyrannosauridae
family
5Animalia : Chordata : Reptilia : Dinosauria : Tyrannosauridae83.5 - 70.6 Ma
Late/Upper Cretaceous

References

Langston W., Oakes M. H. (1954) Hadrosaurs in Baja California, Bulletin of the Geological Society of America 65 12, 1344
Morris W. J. (1973) Mesozoic and Tertiary vertebrates in Baja California, National Geographic Society Research Reports (1966) 7, 197-209
Lillegraven J. A. (1976) A new genus of therian mammal from the Late Cretaceous "El Gallo Formation," Baja California, Mexico, Journal of Paleontology 50 3, 437-443
Morris W. J. (1981) A new species of hadrosaurian dinosaur from the Upper Cretaceous of Baja California—?Lambeosaurus laticaudus, Journal of Paleontology 55 2, 453-462
Estes R., Sanchíz B. (1982) New discoglossid and palaeobatrachid frogs from the Late Cretaceous of Wyoming and Montana, and a review of other frogs from the Lance and Hell Creek Formations, Journal of Vertebrate Paleontology 2 1, 9-20
Nydam R. L. (1999) Polyglyphanodontinae (Squamata: Teiidae) from the medial and Late Cretaceous: new taxa from Utah, U.S.A. and Baja California del Norte, Mexico, Utah Geological Survey Miscellaneous Publication 99-1, 303-317
Reynoso V.-H. (2006) Research on fossil amphibians and reptiles in Mexico, from 1869 to early 2004 (including marine forms but excluding pterosaurs, dinosaurs, and obviously, birds), Studies on Mexican Paleontology 24, 209-231
Alroy J. (2007) Synonymies and reidentifications of North American fossil vertebrates and so forth
Rivera-Sylva H. E., Carpenter K., et al (2011) Late Cretaceous nodosaurids (Ankylosauria: Ornithischia) from Mexico, Revista Mexicana de Ciencias Geológicas 28 3, 371-378
Peecook B. R., Wilson J. A., et al (2014) First tyrannosaurid remains from the Upper Cretaceous "El Gallo" Formation of Baja California, Mexico, Acta Palaeontologica Polonica 59 1, 71-80
Ramírez-Velasco A. A., Hernández-Rivera R., et al (2014) The hadrosaurian record from Mexico, Hadrosaurs, 340-360
López-Conde O. A., Sterli J., et al (2018) Turtles from the Late Cretaceous (Campanian) of El Gallo Formation, Baja California, Mexico, South American Journal of Earth Sciences 88, 693-699 doi:10.1016/ j.jsames.2018.10.005
Chavarria-Arellano M. L., Simões T. R., et al (2018) New data on the Late Cretaceous lizard Dicothodon bajaensis (Squamata, Borioteiioidea) from Baja California, Mexico reveals an unusual tooth replacement pattern in squamates, Anais da Academia Brasileira de Ciências doi:10.1590/0001-3765201820170563
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
 
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