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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Thuroczy, C. & O'Connor, J.P. | 2006 | Notes on the Irish Pteromalidae (Hymenoptera): Dinotiscus Ghesquiere, Gyrinophagus Ruschka, Peridesmia Forster, Spaniopus Walker and Trichomalus Thomson | Journal | Ir. Nat. J. | Details... |
| Trapnell, C.G. | 1926 | Irish plant associations - I. Kincasslagh Head, Co. Donegal | Journal | Ir. Nat. J. | Details... |
| Trevelyan, H. | 1911 | Caricea means in Co. Donegal | Journal | Ir. Nat. | Details... |
| Trumbull, J. | 1905 | Little auks off Co. Donegal | Journal | Ir. Nat. | Details... |
| Turner, G. | 1914 | Spilocryptus fumipennis in Co. Donegal | Journal | Ir. Nat. | Details... |
| Twist, R.S. | 1990 | Excursion: South Donegal: Geological | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Twist, R.S. | 1999 | Spring weekend: Inishowen, Co. Donegal Friday-Monday 22-25 May: Geological Report | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Tyrrell, J.G. | 1983 | The distortion of plant canopies in the coastal zone of NW Donegal | Journal | Ir. Nat. J. | Details... |
| Ussher, R.J. | 1895 | An ornithological exploration in Donegal, Fermanagh, Sligo and Roscommon | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1910 | Irish Field Club Union: Rosapenna Conference. Birds | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1913 | Fulmars and great shearwater on Tory Island | Journal | Ir. Nat. | Details... |
| Waddell, C.H. | 1893 | Mosses and hepatics of the Ben Bulben district | Journal | Ir. Nat. | Details... |
| Waddell, C.H. | 1898 | Notes on mosses and Hepaticae of Ulster | Journal | Ir. Nat. | Details... |
| Wall, D., O'Brien, J. & Meade, J. | 2005 | Basking shark Cetorhinus maximus (Gunnerus) off Cos Clare, Down and Donegal | Journal | Ir. Nat. J. | Details... |
| Warren, R. | 1902 | Wild swans in Donegal and Antrim | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1894 | Kitchen middens in Co. Donegal | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1898 | Hydrobia jenkinsi Smith in Co. Donegal | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1900 | Reversed Helix ericetorum, at Bundoran | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1902 | Abnormal land Mollusca from Bundoran | Journal | Ir. Nat. | Details... |
| Welch, R.J. | 1905 | The last wild red deer, Co. Donegal | Journal | Ir. Nat. | Details... |
453 references found.