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flattened laterally and very high
altus in 1917
Based on the types of flora and fauna found in the Green River Formation
Recent research that examined the microscopic bone structure of the tall neural spines in edaphosaurids has raised doubts about a thermoregulatory role for the sail and suggests that a display function is more plausible
they are encased in resin or Lucite
Stylemys nebrascensis, Tortoise/Turtle Argentinosaurus flattened laterally and very highThe tortoises of the Badlands are one of the most abundant, and are certainly among the most fascinating vertebrates from the Brule Formation. Joseph Leidy, in 1852, described Stylemys nebrascensis from several specimens collected by John Evans of the U. S. Geological Corp in an expedition to the Territory in 1849. Stylemys nebrascensis was the first fossil turtle described from North America. Specimens of these tortoises range in size from as small
US$ 131.75
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