Page:Walcott Cambrian Geology and Paleontology I.djvu/31

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CAMBRIAN GEOLOGY AND PALEONTOLOGY

No. 2.—CAMBRIAN TRILOBITES

By CHARLES D. WALCOTT

(With Six Plates)

CONTENTS

Page
Burlingidæ, new family 14
Burlingia, new genus 14
Burlingia hectori, new species 15
Albertella, new genus 18
" helena, new species 19
" bosworthi, new species 22
Oryctocara, new genus 23
" geikiei, new species 23
Zacanthoides idahoensis, new species 26
Neolenus inflatus, new species 30
" intermedius, new species 34
" " pugio, new variety 35
" superbus, new species 36
Bathyuriscus ornatus, new species 39




The monograph on the Cambrian Brachiopoda,[1] upon which I have been working for so long, is about ready for the press, and attention is now being given to the preliminary study of some of the American Cambrian trilobites. If students and collectors in any country know of interesting or new forms of Cambrian or Lower Ordovician trilobites, or of more perfect specimens representing previously described forms, I should very much like to have their cooperation in making this investigation as thorough and complete as possible.

This is the first of a series of brief papers that will be published as new material of interest is worked up. The classification of Dr. Charles E. Beecher[2] will be followed, in the preliminary studies at least, with such modifications as may appear necessary during the course of the investigations.


  1. To be published as Monograph LI of the U. S. Geological Survey.
  2. American Jour. Sci., 4th ser., vol. III, 1897, pp. 89-106, 181-207.
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