Hunter A.W., Clark N.D.L. (2009) The discovery of Isocrinus cf. robustus from the Lias Group (Lower Jurassic) near Dunrobin Castle, Sutherland, Scotland // Proceedings of the Geologists’ Association. V.120. P. 76–78.
A single stem section (pluricolumnal) belonging to a post-Palaeozoic crinoid (sea lily) is reported from a small outcrop of Lower Jurassic Lias Group strata exposed in low cliff near Dunrobin Castle. This is the first Jurassic crinoid recorded from Eastern Scotland and the small fragment has enough diagnostic characters to be assigned to the species Isocrinus cf. robustus; a crinoid found commonly in the Lower Jurassic of England. The Scottish form collected has unusual morphology that is atypical of the genus.