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LOT 2527
Stromatolite Specimen
4 3/4 in. (853 grams, 11.9 cm).
Comprising two intergrown egg-shaped mounds, produced by the activity of ancient cyanobacteria, the sediment layers visible on the underside. [No Reserve]
ProvenanceFrom the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent.
CONDITIONTimeLine 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:
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LOT 2527
Stromatolite Specimen
Estimate £20 - 30€23 - 35 (for guidance only)$27 - 41 (for guidance only)
Opening Bid
£5 (EUR 6; USD 7) +BP*
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Knightia Multiple Fossil Fish Plate
Eocene Period, circa 58-36 million years B.P.Estimate: £30 - 40 (+bp*)
Opening Bid: £5
An oval matrix with four small and one large Knightia alta specimens. 192 grams, 14.4 cm
From Wyoming, USA. From a Lincolnshire, UK, collection.
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 Uinta, 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. -
Polished Goniatite and Orthoceras Fossil Oval Bowl
Devonian Period, circa 400 million years B.P.Estimate: £40 - 60 (+bp*)
Opening Bid: £5
Large dish carved from fossiliferous stone and set with a goniatite specimen. 813 grams, 23 cm
Ex Cambridgeshire, UK, collection. -
Mixed Cornwall and Other Crystal and Mineral Specimen Group
Estimate: £30 - 40 (+bp*)
Opening Bid: £5
Comprising: quartz from Rostowrack China Clay Pit, Cornwall; smoky quartz from Virginia Pit, St Stephen, Cornwall; chalcopyrite from Mount Wellington Mine, Twelveheads, Cornwall; rhodonite from Greystone Wood Mine, Lawhitton, Cornwall; tourmaline from Buttern Hill Placers, Altarnun, Cornwall; rutile from Lanterdan Quarry, Treknow, Cornwall; epimorph in siderite from Virtuous Lady Mine Buckland, Monachorum, Devon; banded gneiss specimen. 2.04 kg total, 3.2-13.7 cm
From the property of a Cornwall, UK, gentleman.
