Ordovician chitinous hydroids from Hudson Strait, District of Franklin, Northwest Territories

Authors

  • Merrell A. Miller Amoco Production Company, P.O. Box 3385, Tulsa, Oklahoma 74102, U.SA.
  • Graham L. Willams Atlantic Geoscience Centre, Geological Survey of Canada, Bedford Institute of Oceanography, P.O. Box 1006, Dartmouth, Nova Scotia B2Y4A2, Canada

DOI:

https://doi.org/10.4138/1725

Abstract

Chitinous hydroids are documented for the first time from the Upper Ordovician of Eastern Canada, and for the fourth time from North American rocks. One hydrosome branch segment is provisionally attributed to Rhabdohydra Kozlowski. The excellent three dimensional preservation shows the periderm is layered and vesiculate. Periderm thinning, present in Recent chitinous hydroids, is also noted for Ordovician hydroids. RÉSUMÉ Une premiére signalisation, d'hydro ides chitineuses dans l’Ordovicien sup iérieur de l'Est du Canada vient s'ajouter aux trois documents deja issus de roches nord-ameiicaines. Un segment de rameau hydrosomal est rapporte' avec r iéserve au genre Rhabdohydra Kozlowski. line excellente conservation dans ses trois dimensions d iémontre que le p iériderme est vésiculeux et constitu ié de plusieurs couches. L'amincissement du p iériderme, ph iénom iène connu des hydroides chitineuses actuelles, se manifeste aussi chez les hydroides ordoviciennes.

Downloads

Published

1991-09-01

How to Cite

Miller, M. A., & Willams, G. L. (1991). Ordovician chitinous hydroids from Hudson Strait, District of Franklin, Northwest Territories. Atlantic Geoscience, 27(2). https://doi.org/10.4138/1725

Issue

Vol. 27 No. 2 (1991)

Section

Articles

License

All material contained in Atlantic Geology is copyrighted by the journal. Permission to photocopy for internal or personal use or for the internal or personal use of specific clients is granted by Atlantic Geology to libraries and other users registered with the Copyright Clearance Center (CCC), provided that the stated fee per copy is paid directly to the CCC, 21 Congress Street, Salem, Massachusetts 01970 USA. Other requests should be addressed to one of the journal editors, or sent to Atlantic Geology, Box 116, Acadia University, Wolfville, NS, Canada B4P 2R6. Permission to use a single graphic for which Atlantic Geology owns copyright is considered “fair dealing” under the Canadian Copyright Act and “fair use” by the journal, and no other permission need be granted, subject to the image being appropriately cited in all reproductions. The same fair dealing/fair use policy applies to sections of text up to 100 words in length.