File:Troodon formosus holotype tooth.jpg

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Summary

Description Troddon formosus Leidy. Holotype, tooth, Academy of Natural Sciences of Philadelphia, No. 9259; Judith River formation, Upper Cretaceous, Montana; X6 (A. N. S. photograph). (p. 629) 2-The same, showing facet of wear; X6. 3-The same, anterior view; X6.
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Source https://www.jstor.org/stable/1299599?seq=1#metadata_info_tab_contents
Author Loris S. Russell
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Per http://onlinebooks.library.upenn.edu/cce/firstperiod.html#J this journal has no renewal records, hence:

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This work is in the public domain because it was published in the United States between 1931 and 1963, and although there may or may not have been a copyright notice, the copyright was not renewed. For further explanation, see Commons:Hirtle chart and the copyright renewal logs.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.

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Date/TimeThumbnailDimensionsUserComment
current19:41, 25 October 2022Thumbnail for version as of 19:41, 25 October 2022945 × 384 (58 KB)wikimediacommons>FunkMonk== {{int:filedesc}} == {{Information |Description=Troddon formosus Leidy. Holotype, tooth, Academy of Natural Sciences of Philadelphia, No. 9259; Judith River formation, Upper Cretaceous, Montana; X6 (A. N. S. photograph). (p. 629) 2-The same, showing facet of wear; X6. 3-The same, anterior view; X6. |Source=https://www.jstor.org/stable/1299599?seq=1#metadata_info_tab_contents |Date=1948 |Author=Loris S. Russell |Permission=Per http://onlinebooks.library.upenn.edu/cce/firstperiod.html#J this...

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