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This category has the following 3 subcategories, out of 3 total.
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79:This category should only contain articles on
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174:Molluscs described in the 19th century
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149:Gastropods described in 1840
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109:Bivalves described in 1840
179:Animals described in 1840
129:Chitons described in 1840
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83:and notable
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168:Categories
85:subspecies
81:species
153:(97 P)
133:(2 P)
113:(9 P)
71:1845
66:1844
61:1843
56:1842
51:1841
46:1840
41:1839
36:1838
31:1837
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21:1835
170::
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142:G
122:C
102:B
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