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LOT 2403
Natural History - Polished Ammonite Plate
JURASSIC PERIOD, 199-145 MILLION YEARS B.P.
9 in. (778 grams, 23 cm wide).
Comprising a composite of various sized ammonites with polished upper surface. [No Reserve]
ProvenanceFrom Madagascar.
From a Lincolnshire, UK, collection.
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AUCTIONS:
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Natural History - Plesiosaur Fossil Bone Bead Necklace String
Jurassic Period, 155 million years B.P.Sold for (Inc. bp): £85
Restrung using polished bone beads. 91 grams, 55 cm long
From Kimmeridge Clay, Jurassic Coast, Dorset, UK. From an old Lincoln, UK, collection. -
Natural History - Amber with Insect Inclusions
Oligocene Period, circa 45 million years B.P.Sold for (Inc. bp): £20
Including at least one fly; with a polished body. 3.6 grams, 24 mm
Ex private UK collection formed in the 1980s. -
Natural History - Fossil Mosasaur Jaw Fragment
Late Cretaceous Period, 70 million years B.P.Sold for (Inc. bp): £20
A section of a jaw with two Igdamanosaurus aegyptiacus teeth. 63 grams, 76 mm
From the Oulad Abdoun Basin, Morocco, North Africa. Collected between 1930 and 1960. From the collection of the palaeontologist R Gledhill.
Most Mosasaurs had sharp teeth that had evolved to grab slippery prey such as fish. Igdamanosaurus had semi-spherical teeth with rounded points, which were better suited for crushing tough-armoured prey such as turtles, ammonites, nautili, and bivalves.
