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Juvenile Spinosaurus Tooth
The occurrence of articulated individuals frequently denotes rapid burial or anoxic bottom conditions conducive to exceptional preservation
depending on iron content
and then polishing to a high gloss
4" Knightia eocaena | 100% Natural | Green River Formation | Wyoming banded Juvenile Spinosaurus ToothKnightia eocaena 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 Plate approx. size: 10. 25" x 8. 75" Fish approx. size: 4" Knightia is an extinct genus of clupeid bony fish that lived in the freshwater lakes and rivers of North America and Asia during the Eocene epoch. The genus was erected by David Starr Jordan in 1907, in honor of the
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