dbo:abstract
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- The Gaiman Formation (Spanish: Formación Gaiman), in older literature also referred to as Patagonian Marine Formation (Spanish: Formación Patagonia Marino, Patagoniense), is a geologic formation of the in the eastern Chubut Province of northwestern Patagonia, eastern Argentina. The 70 metres (230 ft) thick formation overlies the Sarmiento Formation and is overlain by the and comprises grey and white tuffaceous mudstones and sandstones, deposited in a shallow marine environment. The Gaiman Formation has provided fossils of many extinct penguins, among which five species in the genus Palaeospheniscus, as well as whales and dolphins, most notably , Prosqualodon australis, Idiorophus patagonicus and , indeterminate seal and turtle fossils, shark and other fossils. The richness of the formation, and the other formations in the area, such as the underlying Sarmiento Formation, led to the establishment of the , with a Welsh name, reflecting the number of Welsh settlers in the region. (en)
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