The Appendages, Anatomy, and Relationships of Trilobites

Raymond, Percy E. (Percy Edward) · 1952

Text emphasis is denoted as _Text_ for italic and =Text= for bold. Whole and fractional parts are shown as 4-2/3. OE and oe ligature converted to Oe and oe respectively. Trilobites are among the most interesting of invertebrate fossils and have long attracted the attention of amateur collectors and men of science. These "three-lobed minerals" have been mentioned or described in books at least since 1698 and now several thousand species are known to palæontologists. To this group of students they are the most characteristic animals of the seas of Palæozoic time, and even though they are usually preserved as dismembered parts, thousands upon thousands of "whole ones" are stored in the…

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