| Pseudosiobla campbelli Temporal range:
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|---|---|
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| Pseudosiobla campbelli holotype | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Suborder: | Symphyta |
| Family: | Tenthredinidae |
| Genus: | Pseudosiobla |
| Species: | †P. campbelli
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| Binomial name | |
| †Pseudosiobla campbelli Rice, 1968
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Pseudosiobla campbelli is an extinct species of sawfly in the family Tenthredinidae that is known from early Eocene Ypresian stage[1] lake deposits near the unincorporated community of Horsefly, British Columbia.[2]
- ^ Selden, P.A.; Penney, D. (2009). "A fossil spider (Araneae: Pisauridae) of Eocene age from Horsefly, British Columbia, Canada" (PDF). Contributions to Natural History. 12: 1269–1282.[permanent dead link]
- ^ Rice, H.M.A. (1968). "Two Tertiary sawflies, (Hymenoptera - Tenthredinidae), from British Columbia". Geological Survey of Canada. 67 (59): 1–21.