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.
LANARKOPTERUS. Zool. A fossil eurypterid from the Silurian rocks of the Middle Clyde area (1968 A. Ritchie in Sc. Jnl. Geology IV. iv. 317).
[From Lanark near which it is found.]