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LOT 2306
Natural History - Fossil Canadian Fern
CARBONIFEROUS PERIOD, CIRCA 305 MILLION YEARS B.P.
1 3/4 - 2 1/2 in. (95 grams total, 44-62 mm).
Comprising fossil fern specimens on irregular matrices. [3, No Reserve]
ProvenanceFrom Canada.
From a Lincolnshire, UK, collection.
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AUCTIONS:
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![Natural History - Purple Triangular Fluorite Mineral Specimen Group [20]](https://timelineauctions.com/upload/images/items/small/211333-s.jpg)
Natural History - Purple Triangular Fluorite Mineral Specimen Group [20]
Sold for (Inc. bp): £39
Comprising twenty purple and blue specimens with bevelled edges. 339 grams total, 27-43 mm
Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Knightia Fossil Fish
Eocene Period, circa 58 million years B.P.Sold for (Inc. bp): £26
Knightia alta specimen on a rectangular matrix. 273 grams, 13 cm
From Wyoming (Green River Formation), USA. From an old Bristol, 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. -
Natural History - Knightia Fossil Fish Group
Eocene Period, circa 56-33 million years B.P.Sold for (Inc. bp): £26
Comprising three Knightia alta specimens, each on a round matrix. 140 grams total, 74-82 mm
From 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.
