Category:Fictional elements introduced in 1851

• 1814
• 1815
• 1816
• 1827
• 1847
• 1851
• 1855
• 1865
• 1870
• 1871
• 1882

• 1800s
• 1810s
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• 1830s
• 1840s
• 1850s
• 1860s
• 1870s
• 1880s
• 1890s
• 1900s