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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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Fossil Procerites Ammonite
Jurassic Period, Bajocian, circa 170-168 million years B.P.Estimate: £20 - 30 (+bp*)
Opening Bid: £5
Showing fine ribbing and typical shallow whirls, an inked collector's number '293'. 316 grams, 10.7 cm
From the private collection of Kenneth Machin (1936-2020), Buckinghamshire, UK; his collection of antiquities and natural history was formed since 1948; thence by descent. -
Natural Fossil Coral Head
Devonian Period, circa 417-354 million years B.P.Estimate: £30 - 40 (+bp*)
Opening Bid: £5
Domed coral head with concentric structure underneath, and the upper face showing calyx indentations. 585 grams, 12.5 cm
From a Cambridgeshire, UK, collection. -
![Group of Five [5] Cut and Polished Geode Half Specimens](https://timelineauctions.com/upload/images/items/small/255988-s.jpg)
Group of Five [5] Cut and Polished Geode Half Specimens
Estimate: £20 - 30 (+bp*)
Opening Bid: £5
Comprising five freestanding specimens with polished faces, some with enhanced colouring. 2.35 kg total, 10.7-11.4 cm
From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, UK.
