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The Moenkopi Formation is a geological formation that is spread across the U.S. states of New Mexico, northern Arizona, Nevada, southeastern California, eastern Utah and western Colorado. This unit is considered to be a group in Arizona.
List of rhynchosaur genera; Genus Species Age Location Unit Notes Ammorhynchus. A. navajoi. Anisian US 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
Ripple marks in Moenkopi Formation rock. Local climatic conditions were wetter and more tropical in the Early Triassic than they were previously. In the Capitol Reef area the resulting Moenkopi Formation is divided into four members (from oldest to youngest): [6] Black Dragon Member; Sinbad Limestone Member, Torrey Member, and; Moody Canyon Member.
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 where ever else it is exposed. These unit record the transition from tidal flats to swamping fluvial environments in southern Nevada ...
Moenkopia (meaning "for Moenkopi") is an extinct genus of prehistoric sarcopterygians from the Coelacanthidae [1] found in the Middle Triassic Moenkopi Formation of Arizona.The type, and only species, M. wellesi, was named in 1961 in honour of Samuel Paul Welles. [2]
F. E. Peabody argued that the "horseshoe-like" impressions reported from the Moenkopi Formation were actually "current crescents". [64] 1948. Norbert Casteret reported the presence of Pleistocene hyena tracks in the Aldene cave of France. [65] F. E. Peabody published a study of the amphibian and reptile tracks preserved in the Triassic Moenkopi ...
[2] [3] Total thickness of the formation is up to 150 meters (490 ft). [4] About 30% of the total section of the formation is limestone. [5] The formation rests on the "lower red member" of the Moenkopi Group and underlies the Shnabkaib Member of the Moenkopi Group. [4] More recently, the Virgin Formation is interpreted as a formation of the ...
Within the Marble Canyon and eastern Grand Canyon regions and south into Verde Valley, upper contact of the Kaibab Limestone with the Moenkopi Formation is an erosional disconformity. This disconformity exhibits little relief and is identified by marked differences in color, topography, and rock types between tan, ledge-forming, calcareous ...