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This category has the following 6 subcategories, out of 6 total.
161:
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186:
1:
7:
57:Prehistoric arachnid genera
10:
191:
145:Prehistoric arachnid stubs
175:Prehistoric chelicerates
125:Prehistoric scorpions
105:Paleozoic arachnids
81:Mesozoic arachnids
33:Cenozoic arachnids
170:Extinct arachnids
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17:Subcategories
16:
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109:(4 C, 14 P)
85:(1 C, 11 P)
61:(1 C, 16 P)
164:Categories
149:(35 P)
129:(18 P)
37:(7 P)
166::
147:
127:
107:
83:
59:
35:
138:Σ
118:S
94:P
70:M
46:G
26:C
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