Note on a very fine example of Helicoceras stevensoni preserving the outer chamber
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Note on a very fine example of Helicoceras stevensoni preserving the outer chamber

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Published by American Museum of Natural History in New York .
Written in English

Subjects:

  • Mollusks, Fossil -- Black Hills (S.D. and Wyo.)

Book details:

Edition Notes

Statementby R.P. Whitfield.
SeriesBulletin of the American Museum of Natural History -- v. 14, article 16
ContributionsAmerican Museum of Natural History.
The Physical Object
PaginationP. 219, [2] leaves of plates :
Number of Pages219
ID Numbers
Open LibraryOL18608934M

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Whitfield R. P. NOTE ON A VERY FINE EXAMPLE OF HELICOCERAS STEVENSONI PRESERVING THE OUTER CHAMBER AMNH Bulletin 14(16), 1 pp., 2 plts of a remarkable semi-coiled ammonite from the Pierre Shale at Chadron, NE. Spine bound with acid-free archival cloth tape, signed “from the author” and from the library of H. S. Williams. Whitfield on a very fine example of Helicoceras stevensoni preserving the outer chamber Bulletin of the American Museum of Natural History, 16 (), p. Google ScholarCited by: 4. DISCUSSION: Didymoceras stevensoni differs from Didymoceras nebrascense chiefly in having the larger helical whorls in contact, and in having coarser and fewer ribs, and a body chamber in which the adult aperture is closer to the helix. The early whorls of D. stevensoni are also more helical. Start studying Safety Concepts in the Surgical Setting. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

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