Hostname: page-component-cd9895bd7-jkksz Total loading time: 0 Render date: 2024-12-23T16:12:18.290Z Has data issue: false hasContentIssue false
  • English
  • Français

I.—The Morphology of Triarthrus1

Published online by Cambridge University Press:  01 May 2009

C. E. Beecher
Get access Rights & Permissions [Opens in a new window]

Extract

Most of the recent advances in the knowledge of trilobitestructure have come from the study of Triarthrus. Since Valiant's discovery of the antennæ, and its announcement by Matthew in 1893, the writer has published a series of papers on the detailed structure of this trilobite. Much time has also been spent in carefully working out the numerous specimens from the abundant material in the Yale Museum. Altogether upwards of five hundred individuals with appendages more or less complete have been investigated; and at the present time, it may safely be said that the important exoskeletal features have been seen and described.

Type
Original Articles
Information
Geological Magazine , Volume 3 , Issue 5 , May 1896 , pp. 193 - 197
Copyright
Copyright © Cambridge University Press 1896

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Beecher, C. E., 1893.—A Larval Form of Triarthrus. Amer. Journ. Science, iii, vol. xlvi, pp. 361, 362, 11.Google Scholar
Beecher, C. E., 1893.—On the Thoracic Legs of Triarthrus. Amer. Journ. Science, iii, vol. xlvi, pp. 467–470, 12.Abstract of a paper “On the Structure and Development of Trilobites,” read before the National Academy of Sciences, November 8th.Google Scholar
Beecher, C. E., 1894.—On the Mode of Occurrence, and the Structure and Development, of Triarthrus Btoki. American Geologist, vol. xiii, pp. 38–43, pl. iii, 01.Abstract of a paper “On the Structure and Development of Trilobites,” read before the National Academy of Sciences, November 8th, 1893.Google Scholar
Beecher, C. E., 1894.—The Appendages of the Pygidium of Triarthrus. Amer. Journ. Science, iii, vol. xlvii, pp. 298–300, pl. vii, 04. Read before the Conn. Acad. Arts and Sci., March 21st.Google Scholar
Beecher, C. E., 1895.—Further observations on the Ventral Structure of Triarthrus. American Geologist, vol. xv, pp. 91–100, pls. iv, v, 02.Google Scholar
Beecher, C. E., 1895.—The Lirval Stages of Trilobites. American Geologist, vol. xvi, pp. 166–197, pls. viii–x, 09.Google Scholar
Bernard, H. M., 1894.—The Systematic Position of the Trilobites. Quart. Jouru. Geol. Soc. London, vol. L, pp. 411–432, 08. Read 03 7th.CrossRefGoogle Scholar
Bernard, H. M., 1895.—Supplementary notes on the Systematic Position of the Trilobites. Quart. Journ. Geol. Soc. London, vol. li, pp. 352–359. 08. Read 04 24th.Google Scholar
Bernard, H. M., 1895.—The Zoological Position of the Trilobites. Science Progress vol. iv, pp. 33–49.09Google Scholar
Matthew, W. D., 1893.—On Antennæ and other Appendages of Triarthrus Beckii.Amer. Journ. Science, vol. xlvi, pp. 121–125, pl. i, 08. Read before N. Y. Acad. Sci., vol. xii, pp. 237–241, pl. viii, 07 22nd.Google Scholar
Walcott, C. D., 1879.—Fossils of the Utica Slate. Trans. Albany Institute, vol. x, pp. 18–38, pls. i, ii, 1883. Anthor's extras printed in advance, 06, 1879.Google Scholar
Walcott, C. D., 1894.—Note on some Appendages of the Trilobites. Proc. Biol. Soc. Washington, vol. ix, pp. 89–97, pl. i, 03 30th. Read 03 24th. Geological Magazine, N.S., Dec. IV, vol. I, pp. 246–251, Pl. VIII, June.Google Scholar