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Helicoplacoidea (English Wikipedia)

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

refsWebsite
Global rank English rank
2doi.org
2nd place
2nd place
2paleobiodb.org
4,533rd place
8,479th place
1harvard.edu
18th place
17th place
1nih.gov
4th place
4th place
1semanticscholar.org
11th place
8th place
1berkeley.edu
580th place
462nd place
1palaeos.com
low place
low place

berkeley.edu (Global: 580th place; English: 462nd place)

ucmp.berkeley.edu

doi.org (Global: 2nd place; English: 2nd place)

  • Durham, J. W.; Caster, K. E. (17 May 1963). "Helicoplacoidea: A New Class of Echinoderms". Science. 140 (3568): 820–822. Bibcode:1963Sci...140..820D. doi:10.1126/science.140.3568.820. PMID 17746435. S2CID 33443660.
  • Wilbur, Bryan C. (1 August 2006). "Reduction in the number of Early Cambrian helicoplacoid species". Palaeoworld. 15 (3): 283–293. doi:10.1016/j.palwor.2006.10.009.

harvard.edu (Global: 18th place; English: 17th place)

ui.adsabs.harvard.edu

  • Durham, J. W.; Caster, K. E. (17 May 1963). "Helicoplacoidea: A New Class of Echinoderms". Science. 140 (3568): 820–822. Bibcode:1963Sci...140..820D. doi:10.1126/science.140.3568.820. PMID 17746435. S2CID 33443660.

nih.gov (Global: 4th place; English: 4th place)

pubmed.ncbi.nlm.nih.gov

  • Durham, J. W.; Caster, K. E. (17 May 1963). "Helicoplacoidea: A New Class of Echinoderms". Science. 140 (3568): 820–822. Bibcode:1963Sci...140..820D. doi:10.1126/science.140.3568.820. PMID 17746435. S2CID 33443660.

palaeos.com (Global: low place; English: low place)

paleobiodb.org (Global: 4,533rd place; English: 8,479th place)

semanticscholar.org (Global: 11th place; English: 8th place)

api.semanticscholar.org

  • Durham, J. W.; Caster, K. E. (17 May 1963). "Helicoplacoidea: A New Class of Echinoderms". Science. 140 (3568): 820–822. Bibcode:1963Sci...140..820D. doi:10.1126/science.140.3568.820. PMID 17746435. S2CID 33443660.