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Mahogany paper grain — description and returns beneath the overlapping buy card.
• Silurian of Canada ( Northwest Territories)
the optical constants
dunklei there were two to five barbs on each tooth
occasionally showing green non-pleochroic core
while 476 are currently extant with or without a fossil record
21559 - Tower Eyed 2.33 Inch Erbenochile issoumourensis Lower Devonian Kettneraspis • Silurian of Canada (Spectacularly well detailed specimen. It has been carefully prepared during a long laboratory process. Impressive eyes facets. Finest Quality specimen. Extremely rare and interesting species. With an exaggerated development of the eyes. Probably as an adaptation for a panoramic view of its environment and as a mechanism to quickly detect possible predators. Of course, many of the spines during the preparation process have been fractured and glued
US$ 104.50
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US$ 129.00