The Los Alamitos Formation is a geological formation of the North Patagonian Massif in Rio Negro Province, northwestern Patagonia, Argentina, whose strata date back to the Late Cretaceous (Late Campanian to Maastrichtian). Dinosaur remains are among the fossils that have been recovered from the formation.Weishampel et al., 2004, "Dinosaur distribution (Late Cretaceous, South America).", pp.600-604
Fossil content
Dinosaurs Genus Species Material Notes Images Aeolosaurus A. rionegrinus A titanosaur. Alamitornis A. minutus An ornithuromorph. Huallasaurus H. australis "Partial skulls with associated postcrania, approximately [five] individuals." A hadrosaur formally named "Kritosaurus" australis. cf. Hesperornithes Indeterminate theropod Indeterminate ornithurine Indeterminate avian
Rhynchocephalians Genus Species Material Notes Images Alamitosphenos A. mineri Kawasphenodon K. expectatus
Snakes Genus Species Material Notes Imaes Alamitophis A. argentinus
Turtles Genus Species Material Notes Images Patagoniaemys P. aeschyli
Mammaliaforms Genus Species Material Notes Images Alamitherium A. bishopi Austrotriconodon A. sepulvedaiA. mckennai Leonardus L. cuspidatus Bondesius B. ferox Brandonia B. intermedia Casamiquelia C. rionegrina Ferugliotherium F. windhauseni Gondwanatherium G. patagonicum Groebertherium G. novasi Mesungulatum M. houssayi Paraungulatum P. rectangularis Reigitherium R. bunodontum Rougiertherium R. tricuspes
See also List of dinosaur-bearing rock formations
References
Bibliography