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Pinnularia birnirkiana Patrick & Freese 1961
| GC8215a Pinnularia birnirkiana Patrick & Freese 1961 Circled specimen 1 on holotype slide |
| GC8215a Pinnularia birnirkiana Patrick & Freese 1961 Circled specimen 2 on holotype slide |
| GC8215a Pinnularia birnirkiana Patrick & Freese 1961 Circled specimen 3 on holotype slide |
| GC8215a Pinnularia birnirkiana Patrick & Freese 1961 Specimen from the holotype slide, not circled |
| GC8215a Pinnularia birnirkiana Patrick & Freese 1961 Specimen from the holotype slide, not circled |
