Description
5 billion years old
based on a comparison of skull shapes
407 ppm germanium
specifically in western areas such as Nevada
Phareodus testis | Green River Formation | Wyoming mosasaur 5 billion years oldPhareodus testis Eocene (51. 98 Million Years Ago) Private Quarry, Green River Formation, Wyoming, USA Preparation by Carl Ulrich Obtained from the collection of Dr. William Rieger Specimen approx. size: 6" Matrix approx. size: 8. 75" x 7. 25" In the ancient waters of Fossil Lake, a formidable predator roamed. The Phareodus testis, a smaller but equally fascinating cousin of Phareodus encaustus. Both species boasted striking features, including pointy
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