Pteraspis (French Wikipedia)

Analysis of information sources in references of the Wikipedia article "Pteraspis" in French language version.

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doi.org (Global: 2^nd place; French: 3^rd place)

(en) E. Ray Lankestera1, « On a New Cephalaspis Discovered in America, etc. », Geological Magazine, Cambridge University Press, vol. 7, n^o 75,‎ septembre 1870, p. 397-399 (DOI 10.1017/S0016756800209485)
(en) Errol Ivor White, « New Pteraspids from South Wales », Quarterly Journal of the Geological Society, vol. 94,‎ février 1938, p. 85-116 (DOI 10.1144/GSL.JGS.1938.094.01-04.05)