1940 in paleontology (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "1940 in paleontology" in English language version.

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amnh.org

digitallibrary.amnh.org

doi.org

handle.net

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jstor.org

  • Call, V.B.; Dilcher, D.L. (1997). "The fossil record of Eucommia (Eucommiaceae) in North America". American Journal of Botany. 84 (6): 798–814. doi:10.2307/2445816. JSTOR 2445816. PMID 21708632. S2CID 20464075.
  • Brown, R. W. (1940). "New species and changes of name in some American fossil floras". Journal of the Washington Academy of Sciences. 30 (8): 344–356. JSTOR 24529454.

nih.gov

pubmed.ncbi.nlm.nih.gov

polychora.com

semanticscholar.org

api.semanticscholar.org

web.archive.org

worldcat.org

search.worldcat.org

  • Gini-Newman, Garfield; Graham, Elizabeth (2001). Echoes from the past: world history to the 16th century. Toronto: McGraw-Hill Ryerson Ltd. ISBN 9780070887398. OCLC 46769716.