Trilobitomorpha

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Structure and appendages of Trinucleus.
Charles Emerson Beecher

American Journal of Science April 1895, s3-49 (292) 307-311; DOI: https://doi.org/10.2475/ajs.s3-49.292.307
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The appendages of the pygidium of Triarthrus.
Charles Emerson Beecher

American Journal of Science April 1894, s3-47 (280) 298-300; DOI: https://doi.org/10.2475/ajs.s3-47.280.298
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On the thoracic legs of Triathrus.
Charles Emerson Beecher

American Journal of Science December 1893, s3-46 (276) 467-470; DOI: https://doi.org/10.2475/ajs.s3-46.276.467
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A larval form of Triarthrus.
Charles Emerson Beecher

American Journal of Science November 1893, s3-46 (275) 378-379; DOI: https://doi.org/10.2475/ajs.s3-46.275.378
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On antennae and other appendages of Triarthrus beckii
W. D. Matthew

American Journal of Science August 1893, s3-46 (272) 121-125; DOI: https://doi.org/10.2475/ajs.s3-46.272.121
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Larval forms of trilobites from the lower Helderberg group
Charles Emerson Beecher

American Journal of Science August 1893, s3-46 (272) 142-147; DOI: https://doi.org/10.2475/ajs.s3-46.272.142
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Stratigraphic position of the Olenellus fauna in North America and Europe
C. D. Walcott

American Journal of Science July 1889, s3-38 (223) 29-42; DOI: https://doi.org/10.2475/ajs.s3-38.223.29
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The Taconic system of Emmons and the use of the name Taconic in geologic nomenclature
C. D. Malcom

American Journal of Science April 1888, s3-35 (208) 307-327; DOI: https://doi.org/10.2475/ajs.s3-35.208.307
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The great Acadian Paradoxides.
George Frederick Matthew

American Journal of Science May 1887, s3-33 (197) 388-390; DOI: https://doi.org/10.2475/ajs.s3-33.197.388
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On the kin of Paradoxides (Olenellus) kjerulfi.
George Frederick Matthew

American Journal of Science May 1887, s3-33 (197) 390-392; DOI: https://doi.org/10.2475/ajs.s3-33.197.390

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