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单词 Chitinodendron franconianum
释义
Chitinodendron franconianum

Geology and Earth Sciences
  • A primitive allogrominid foraminiferid with an external chitinoid membrane. It is from the Upper Cambrian of Wisconsin, USA. Single-celled organisms are known from Precambrian strata, but C. franconianum is one of the first protozoans with an external skeleton.


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