'Calx carbonata' [Ammonite with crystals] mb-height 2029 7th May 1961

7th May 1961

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Plate 3 from The natural history of monkeys

Plate 6 from A Description of the Muscles of the Human Body

'Calx carbonata' [Ammonite with crystals] mb-height 2029 7th May 1961Fossil ammonite section with two details of calcium carbonate crystals, here termed 'crystallized carbonate of lime, lenticular equiaxed'. Plate 12 from British mineralogy: or coloured figures intended to elucidate the mineralogy of Great Britain, by James Sowerby, volume 1 (London, R. Taylor & Co., 1804). The accompanying text states that the fossil 'is the Helmintholithus Ammonites of Linn. Gmel. abundant in many parts of Great Britain.' The