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English: Bothriocidaris globulus. A, from the side; B, the plates around the aboral pole. (After Jaekel.) The short spines which were attached to the tubercles are not drawn.
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来源 Encyclopædia Britannica, 1911
作者 Encyclopædia Britannica, Volume 8, Slice 10., available freely at Project Gutenberg

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Public domain This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.
Public domain This image comes from the Project Gutenberg archives. This is an image that has come from a book or document for which the American copyright has expired and this image is in the public domain in the United States and possibly other countries.

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当前2011年2月22日 (二) 15:562011年2月22日 (二) 15:56版本的缩略图464 × 223(39 KB)Keith Edkins留言 | 贡献=={{int:filedesc}}== {{Information |Description={{en|''Bothriocidaris globulus.'' A, from the side; B, the plates around the aboral pole. (After Jaekel.) The short spines which were attached to the tubercles are not drawn.}} |Source=Encyclopædia Britanni

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