Kirtland Formation
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The Kirtland Formation is a sedimentary geological formation.
Kirtland Formation outcrops near Coal Creek
Alamosaurus
Bistahieversor
Saurornitholestes
Ojo Alamo Formation
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The Ojo Alamo Formation is a geologic formation in New Mexico spanning the Mesozoic/Cenozoic boundary. Non-avian dinosaur fossils have controversially been identified in beds of this formation dating from after the Cretaceous–Paleogene extinction event, but these have been explained as either misidentification of the beds in question or as reworked fossils, fossils eroded from older beds and redeposited in the younger beds.
Ojo Alamo Formation in the Bisti/De-Na-Zin Wilderness
Ojo Alamo Formation showing conglomerate lens with petrified wood, De-Na-Zin Wilderness
Image: Dineobellator notohesperus NT
Image: Ojoraptorsaurus boerei profile reconstruction