page_title: Ojo Alamo Formation
section_title: Fossils
hierarchical_section_title: Ojo Alamo Formation / Fossils
caption_attribution_description: English: Life reconstruction of Dineobellator notohesperus depicting a possible scene from the Maastrichtian (approximately 66.5 Ma) in the San Juan Basin, New Mexico. Three D. notohesperus standing at the edge of a water source, with one in the foregrounf preening its feathers and another watching an Ojoceratops fowleri coming to the water's edge. Two Alamosaurus sanjuanensis are in the background, with a small tyrannosaurid watching from the forest edge. Artwork by Sergey Krasovskiy, with permission.
context_page_description: The Ojo Alamo Formation is a geologic formation in New Mexico spanning the Mesozoic/Cenozoic boundary.
context_section_description: Dinosaur remains are among the fossils that have been recovered from the formation, though all dinosaur remains come from the lowest part of the formation, the Naashoibito member (sometimes considered part of the Kirtland Formation, which dates to the late Maastrichtian stage of the Cretaceous period.
  Some researchers have claimed to find isolated non-avian dinosaur remains in the younger Kimbeto Member. If this is the case, it would represent the only known instance of a non-avian dinosaur population persisting after the Cretaceous–Paleogene extinction event. However, most scientists consider these to have been stratigraphically misinterpreted or reworked from the older Naashoibito member.
caption: A restoration of the environment, featuring Dineobellator (center front), Ojoceratops (right), a tyrannosaurid (far left), and Alamosaurus (center back), taxa all known from the formation.
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