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LOT 1725
Natural History - Hyphalosaurus Fossil in Matrix
CRETACEOUS PERIOD, CIRCA 122 MILLION YEARS B.P.
6 1/4 in. (9 3/4 x 6 7/8 in.) (150 grams, 16 cm (344 grams total, 24.5 x 17.5 cm including box)).
A Hyphalosaurus sp. fossil aquatic reptile in a sub-rectangular matrix; held in a display box with a fabric covering. [No Reserve]
ProvenanceFrom China.
Ex Lincolnshire, UK, collection.
Hyphalosaurus means 'submerged lizard' and was a genus of freshwater aquatic reptiles that resembled miniature plesiosaurs. It was an active predator that captured small prey animals like arthropods and fish with a sideways strike, similar to modern crocodiles.
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AUCTIONS:
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Seasonally, some 56 million years ago, in the Green River Region of Wyoming, torrential rains fell on the mountains. The rain flowed down the mountain sides, forming wide shallow lakes in the valley below. During the dry season, these lakes evaporated (similar to certain parts of Africa today). Millions of fish died in this short period of time. This climatic cycle happened over a 20-thousand-year period. Layer upon layer of mud was deposited over these years, entombing huge numbers of fish. At a much later date volcanic activity uplifted this area to expose their fossils. -
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