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Keywords from Image Description:
Conchological Manual Plate . Plate Fig to Names see below are as used in the text gutenberg Conchological Manual George Brettingham Sowerby II PDart FIG Fam Spirifer trigonalis px Trigonotreta Knig from Sow Gen dorsatus Thecidium recurvirostrum Pycnodonta radiata from Fischer Hinge of the same Lingula