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LOT 1979
Natural History - 'Whitby' Fossil Ammonite
JURASSIC PERIOD, 199-145 MILLION YEARS B.P.
6 7/8 in. (2.41 kg, 17.5 cm).
A Hildoceras sp. fossil ammonite displayed in a nodule section. [No Reserve]
ProvenanceFrom Whitby Dac.
Ex Lincolnshire, UK, collection.
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AUCTIONS:
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Natural History - Large Dravite Tourmaline Specimen Group
Sold for (Inc. bp): £33
A group of seven large dravite tourmaline crystal specimens of columnar hexagonal form. 1.05 kg total, 41-87 mm
Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Cut and Polished Agate Crystal Geode Section Group
Sold for (Inc. bp): £39
A group of eight agate geode sections. 3.5 kg total, 85-96 mm
Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's). -
Natural History - Rastellum Fossil Bivalve
Jurassic Period, circa 155 million years B.P.Sold for (Inc. bp): £33
A Rastellum carinatum fossil bivalve; held in a card collector's tray. 105 grams, 61 mm
From Madagascar. Ex Cambridgeshire, UK, collection.
Rastellum carinatum specimens have wide, angled ribs that have led to it being called the 'denture clam'; the zig-zag join between the two shells stopped coarse dirt and debris entering the shell and damaging its soft body. Like modern oysters, it lived in shallow coastal waters including the interstitial zone and fed on food particles that it filtered out of the sea water.
