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Educational institutions & museums
Scientific name: Atrophaneura dixoni
fine-grained quartzite ideally suited to abrasive work
Their elongated
Perisama NUMBERWING type species
Fossil Fish | Knightia alta | Green River Formation, Wyoming | Eocene | 65–150mm museum Educational institutions & museumsA genuine Eocene fossil fish from one of the world's most celebrated palaeontological formations. Knightia alta inhabited the vast freshwater lakes of Eocene North America approximately 33. 956 million years ago. Taxonomically allied to herring and sardines, these schooling fish fed on algae, diatoms, insects, and occasionally smaller fish. They are characterised by heavy scales, small conical teeth, and distinctive rows of dorsal and ventral scutes
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