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LOT 1761
Natural History - Fossil Shark Vertebra Group
UPPER PALAEOCENE PERIOD, CIRCA 56 MILLION YEARS B.P.
2 1/2 - 3 in. (302 grams total, 63-77 mm).
Comprising two Otodus obliquus, Agassiz 1843 (mackerel shark) vertebrae. [No Reserve]
ProvenanceFrom Ouled Abdoun Basin Formation (Phosphate beds), Oued Zem, Morocco.
From an old Oxfordshire fossil and mineral collection.
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AUCTIONS:
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Natural History - Boxed Historic 'Coral' Calcite Specimen
Sold for (Inc. bp): £20
The white druzy crystals on a freestanding matrix. 170 grams, 85 mm
Ex Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Knightia Fossil Fish
Eocene Period, circa 56-33 million years B.P.Sold for (Inc. bp): £46
Knightia alta specimen on a rectangular matrix. 303 grams, 14.5 cm
From Wyoming (Green River Formation), USA. Acquired during 1980s. From the Pradi Collection, Boston, U.S.A.
In southwest Wyoming (and parts of Colorado and Utah) in the Green River Formation are found some of the world's most outstanding specimens of fossil fish. The Green River system was composed of three lakes: Lake Ulinta, Lake Gosiute and Fossil Lake. These Eocene lakes lay in a series of intermountain basins formed by geological events that uplifted the Rocky Mountains during the early Tertiary time. The climate was much different from the desert-like climate of this area today. Both the fauna (crocodiles, alligators, boa constrictors and some subtropical fish families) and the flora (such as large palm trees) indicate a climate much like that found along the Gulf Coast today. Large amounts of ash found in the sediments indicate that volcanoes were particularly active at this time. -
Natural History - Historic Vanadinite Crystal Formation
Sold for (Inc. bp): £46
Comprising variously sized prismatic red-brown crystals on matrix. 52 grams, 52 mm
Collected in person from various parts of the world mainly between 1957-1966. From the private mineral collection of Stephen Atkinson, Harpenden, UK. Accompanied by a copy of a letter from the vendor giving details of him collecting these minerals throughout his life.
