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The Moenkopi Formation is a geological formation that is spread across the ... Dinosaur National Monument ... The footprints of Cheirotherium and Rhynchosauroides are ...
The oldest of these is the Moenkopi Formation, which recently produced the oldest Mesozoic vertebrate tracks from the state of Nevada. Overlying the Moenkopi Fm is the Chinle Fm, which has produced some isolated Phytosaur teeth from the Muddy Mountains, some associated bones of Metoposaurs from the Spring Mountains, and abundant petrified wood ...
Rhynchosauroides is an ichnogenus, a form taxon based on footprints. The organism producing the footprints was likely a lepidosaur [1] and may have been a sphenodont, an ancestor of the modern tuatara. The footprint consists of five digits, of which the fifth is shortened and the first highly shortened. [2]
Some of the finer-grained beds display ripple marks and mudcracks while the sandstone has horizontal and low-angle crossbedding. Small to large fossilized track-ways from amphibians and reptiles are found in this layer as well as casts of halite. The youngest member of the Moenkopi is the 320 to 430 foot (98 to 130 m) thick Moody Canyon Member.
The Hopi village of Moenkopi lies directly to its southeast. A minority of Hopi also live in Tuba City; the majority are Navajo. European Americans associated with the the Church of Jesus Christ of Latter-day Saints named the town in honor of chief Tuuvi, a Hopi man from Oraibi. He converted to the Mormon faith and allowed their migrants to ...
Fossilized dinosaur footprints from sauropods have been found in this formation near the Left Fork of North Creek. [11] Mountains in Nevada and California continued to rise in the Lower Jurassic as plate motions forced North America northward. Eventually, this created a rain shadow and brought widespread desertification. [12]
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Moenkopi Formation. A stenaulorhynchine. Beesiiwo [6] B. cooowuse. Carnian US Popo Agie Formation. A hyperodapedontine previously referred to Hyperodapedon. Brasinorhynchus. B. mariantensis. Ladinian Brazil. Santa Maria Formation. A stenaulorhynchine, previously known as the "Mariante Rhynchosaur". Bentonyx. B. sidensis. late Anisian UK