Scottish National Dictionary (1700–)
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First published 1976 (SND Vol. X, list of scientific terms with Scottish connections).
This entry has not been updated since then but may contain minor corrections and revisions.
THURSIUS. Geol. A fossil fish of the Old Red Sandstone period, found in Caithness (1963 Miles & Westoll in Trans. Royal Soc. Edb. LXV. 179).
[From Thurso, Caithness.]
