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LOT 2328
Natural History - Knightia Fossil Fish
EOCENE PERIOD, CIRCA 56-33 MILLION YEARS B.P.
5 1/4 in. (397 grams, 13.3 cm).
Knightia alta specimen on a rectangular matrix. [No Reserve]
ProvenanceFrom Wyoming (Green River Formation), 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 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.
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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Natural History - Fossil Speculator Trilobite
Devonian Period, circa 417-354 million years B.P.Sold for (Inc. bp): £65
Phacops speculator specimen on a matrix. 193 grams, 76 mm
From the Atlas Mountains, Hamar Laghdad Formation, Pragian, (Alnif), Morocco, North Africa. From a Cambridgeshire, UK, collection. -
![Natural History - Mixed Polished Mineral Specimen Pebble Group [100]](https://timelineauctions.com/upload/images/items/small/211395-s.jpg)
Natural History - Mixed Polished Mineral Specimen Pebble Group [100]
Sold for (Inc. bp): £20
Comprising: haematite, quartz, amethyst, aventurine, agate, dalmatian jasper and others. 793 grams total, 18-33 mm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Mineralogical Geometry Set
French, circa 1850 A.D.Sold for (Inc. bp): £2,340
A rare complete set of folded-card polyhedrons, each with extensive printed notes on the surfaces, dimension and properties; to be assembled from the 120 components into two adjacent cuboids within a wooden box with hinged lid and paper insert announcing 'Géométrie Stéréométrique -ou- Décomposition du cube en polyèdres réguliers, irréguliers et corps ronds... par L. Dupin Ing.eur' (Stereometric Geometry or the disassembly of the cube into regular and irregular polyhedrons and cylinders... by L. Dupin, Inventor). 463 grams total, 23.3 x 12.3 x 6.7 cm (case)
Private American collection, New York, USA. This lot has been checked against the Interpol Database of stolen works of art and is accompanied by search certificate no.12065-211002.
The box contains an educational set of geometric shapes comprising 120 individual three-dimensional cardboard pieces with printed names and numbers corresponding to the key, arranged in various smaller interlocking configurations. The producer, Louis Dupin de la Guérinière, was a French civil engineer who began to produce and sell folded models to show the physical properties of polyhedrons. His models were intended not only as educational aids for students of mathematics, but also for those whose work involved perspective drawing, stone-cutting and mineralogy. The sets began production in the 1840s and were a popular study-aid. The present example has an adhesive label in the lid naming the supplier as Crosti of Rue Ste. Catherine, Bordeaux, France.
