Project 586: J. C. Lamsdell. 2013. Redescription of Drepanopterus pentlandicus Laurie 1892, the earliest known hibbertopteroid (Chelicerata : Eurypterida) from the early Silurian (Llandovery) of the Pentland Hills, Scotland. Earth and Environmental Science Transactions of the Royal Society of Edinburgh. 103:77–103.