Observations on the Terataspis grandis, Hall, the largest known trilob 67196 [Full title: Observations on the Terataspis grandis, Hall, the largest known trilobite] [Full author's name: John Mason Clarke] [author: John Mason Clarke] [Link: https://www.gutenberg.org/6/7/1/9/67196] [Files: 67196-0.txt; 67196-h.htm] Thanks to Tom Cosmas produced from images provided by The Internet Archive and placed in the Public Domain. Regards, Al