Los Alamitos Formation

Los Alamitos Formation
Stratigraphic range: Late Cretaceous (Late Campanian-Maastrichtian)
Type Geological formation
Location
Region Río Negro Province
Country Argentina

The Los Alamitos Formation is a geological formation in Rio Negro, Argentina whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.[1]

Dinosaurs

Non-avian Dinosaurs reported from the Los Alamitos Formation
Genus Species Location Stratigraphic position Material Notes Images

Aeolosaurus

A. rionegrinus

Secernosaurus (="Kritosaurus" australis[2])

S. koerneri

 "Partial skulls with associated postcrania, approximately [five] individuals."[3]

Indeterminate Theropod
Birds reported from the Los Alamitos Formation
Genus Species Location Stratigraphic position Material Notes Images

Alamitornis

A. minutus

Cf. Hesperornithes

Indeterminate Ornithurine

Indeterminate Avian

Mammaliaforms

Mammaliaforms reported from the Los Alamitos Formation
Genus Species Location Stratigraphic position Material Notes Images

Austrotriconodon
  • A. sepulvedai
  • A. mckennai

Reigitherium

 R. bunodontum Bonaparte, 1990

Ferugliotherium

 F. windhauseni

Gondwanatherium

 G. patagonicum

Bondesius

 B. ferox

Groebertherium

 G. novasi

Leonardus

 L. cuspidatus

Mesungulatum

 M. houssayi Bonaparte & Soria, 1985

Paraungulatum

 P. rectangularis

Brandonia

 B. intermedia

Casamiquelia

 C. rionegrina

Alamitherium

 A. bishopi Bonaparte, 1999

Rougiertherium

 R. tricuspes

See also

References

  1. ↑ Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, South America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 600-604. ISBN 0-520-24209-2.
  2. ↑ Prieto–Marquez, Alberto; Salinas, Guillermo C. (2010). "A re–evaluation of Secernosaurus koerneri and Kritosaurus australis (Dinosauria, Hadrosauridae) from the Late Cretaceous of Argentina". Journal of Vertebrate Paleontology. 30 (3): 813–837. doi:10.1080/02724631003763508.
  3. ↑ "Table 20.1," in Weishampel, et al.


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