| Name: Hypagnostus parvifrons (Order: Agnostida; Family; Family: Spinagnostidae) and Ptychagnostus cuyanus (Order: Agnostida; Family: Ptychagnostidae) Class Trilobita, Order Agnostida Geologic Age: Cambrian Size (25.4 mm = 1 inch): Hypagnostus: 7 mm long by 4 mm wide Ptychagnostus: up to 5 mm long by 2 mm wide on a 50 mm by 84 mm matrix Fossil Site: House Range, Marjum Formation, Millard County, Utah Code: TR155 Price: $45.00 - sold |
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