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LOT 2446
Fossil Knightia Fish Plate
EOCENE PERIOD, CIRCA 58-36 MILLION YEARS B.P.
8 x 5 3/4 in. (1.14 kg total, 20.5 x 14.5 cm).
Showing two Knightia alta fish on a rectangular limestone matrix with a partial third fish. [No Reserve]
ProvenanceFrom Wyoming, USA.
From the private collection of a Devon, UK, lady.
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.
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AUCTIONS:
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LOT 2446
Fossil Knightia Fish Plate
Estimate £40 - 60€46 - 70 (for guidance only)$54 - 81 (for guidance only)
Opening Bid
£5 (EUR 6; USD 7) +BP*
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Fossil Shrimp in Matrix Group
Cretaceous Period, circa 110 million years B.P.Estimate: £40 - 60 (+bp*)
Opening Bid: £5
Comprising three matrices, one with a single specimen, one with two, and the third matrix with two complete and one partial specimen. 475 grams total, 6.6-10 cm
From Colarado, USA. 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. -
Fossil Belemnite in Matrix with Ammonite Impression
Jurassic Period, circa 201-143 million years B.P.Estimate: £30 - 40 (+bp*)
Opening Bid: £5
An irregular matrix with Cylindroteuthis puzosiana belemnite and an impression of Kosmoceras ammonite, inked collector's number '55'. 687 grams, 27.1 cm
From Jurassic Oxford Clay, Jason Zone, Calvert, Buckinghamshire, UK. 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. -
Fossil Pliomera Fisheri Trilobite in Matrix
Middle Ordovician Period, 485-470 million years B.P.Estimate: £30 - 40 (+bp*)
Opening Bid: £5
In a partially curled, defensive posture showing the characteristic notched pygidium. 83.3 grams, 66 mm
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.