Screen 4: Cirroidea, Cerithioidea
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| Calliostoma gemmulatum (12 mm),colno 43736 Pleistocene, Palos Verdes Sands |
Calliostoma tricolor (6 mm), colno 43746 Pleistocene, Palos Verdes Sands |
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| Lirularia succinata (12 mm),colno 43738 Pleistocene, Palos Verdes Sands |
Bittium rugatum (9 mm),colno 43718 Pleistocene, Timms Pit Silt Formation |
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