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as Panthera leo spelaea
The internal natural pocket area of the clam is replaced with stunning golden yellow calcite crystals that fluoresces and phosphorescence a bright yellow to a light green under short and long wave black (UV) light
Estimates suggest it grew to between 15 and 18 meters in length
horn cores
1.5" Amphiplaga brachyptera | Green River Formation | Wyoming Crinoid as Panthera leo spelaeaAmphiplaga brachyptera Eocene (51. 98 Million Years Ago) Private Quarry, Green River Formation, Wyoming, USA Preparation by Jim Tynsky Amphiplaga approx. size: 1. 5" Matrix approx. size: 2. 5" x 2" Apmhiplaga is a member of the Family Percopsidae under the Order Percopsiformes. The family is referred to as trout perch due to a superficial resemblance to trout and perch, but percopsids are not closely related to either group. Percopsiformes are
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