Note 89 — Chapter VI
Reading edition
See Pict. Atlas (pl. viii.) for coloured figures; and Org. Rem. vol. L plate viii. figs. 1-7. The reader will be amused by the perusal of the ingenious but unsuccessful attempt of the excellent author, Mr. Parkinson, to elucidate their nature. I have still a specimen which he presented to me more than thirty-five years since, as one of the most curious and perplexing fossils that had ever come under his notice.