How is radioactive dating used to interpret the fossil record alliance enter russian dating

The vertebrate tracks have been referred to as "amphibians and/or as reptiles," but from the structure of the tracks the majority of them are most easily interpreted as amphibians however strange it might be to have a majority population of amphibians living happily in a desert environment.No other fossils have been found in the Coconino Sandstone to include evidence of any plant life (which seems strange since animals and plants usually go together - even in a desert).This theory would mean that a layer of water-deposited mud (the Hermit Shale) was followed by a layer of wind-deposited desert sand over the course of between 5 and 10 million years, and then the area was again covered by water and the Kaibab limestone was deposited.It averages 96 meters in thickness (315ft.) and covers an area of 200,000 sq.

miles to include most of northern Arizona from the Magollon Rim, northward to the Utah border.It is up to 1,000 feet thick at its southern edge and thins to a few feet at its northern boundary.

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