Loading, please wait...
LOT 1826
Natural History - Large Cut and Polished Agate Crystal Geode Slice
11 1/4 in. (517 grams, 28.5 cm).
A large cut and polished agate geode slice with some exposed crystals. [No Reserve]
ProvenanceMineral Imports, London, UK.
Gregory, Bottley & Lloyd (Gregory's).
TimeLine Auctions follows a vetting process to ensure the authenticity and legality of all items, reinforcing our commitment to integrity and responsible trading. Each antiquity, antique, and coin lot undergoes thorough examination by a vetting committee of at least ten external specialists, professional trade association members, scientists, and archaeologists: Our Vetting Process
AUCTIONS:
TimeLine is a leading auction house specialising in antiquities, ancient art, collectables, natural history, coins, medals, and books. Our auctions offer museums, collectors, historians, and enthusiasts the opportunity to acquire unique and historically significant pieces.
LOT 1826
Natural History - Large Cut and Polished Agate Crystal Geode Slice
Sold for (Inc. bp): £39
-
Natural History - Fossil Agadir Ammonite
Cretaceous Period, 145-66 million years B.P.Sold for (Inc. bp): £52
A free-standing Mellitella sp. fossil ammonite. 1.8 kg, 13.5 cm
From Agadir, Morocco, North Africa. Ex Cambridgeshire, UK, collection. -
Natural History - Knightia Fossil Fish
Eocene Period, 56-33 million years B.P.Sold for (Inc. bp): £39
A Knightia alta fossil fish in matrix. 277 grams, 13 x 9.5 cm
From Wyoming, Green River Formation, U.S.A. Acquired during the 1980s. From the Pradi Collection, Boston, U.S.A.
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. -
Natural History - Fossil African 'T-rex' Dinosaur Tooth
Cretaceous Period, 145-93 million years B.P.Sold for (Inc. bp): £390
A large Carcharodontosaurus saharicus (African T-rex) tooth with enamel and visible serrations. 13.8 grams, 55 mm
From the Tegana formation of the Sahara Desert, Morocco, North Africa. Acquired during the 1980s. From an old Lincolnshire, UK, collection.
The Carcharodontosaurus saharicus was one of the largest predators of all time (larger than its distant North American T-Rex cousin) and is related to Allosaurus and the South American Giganotosaurus.
