Chitinodendron franconianum

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Chitinodendron franconianum Single-celled organisms are known from Precambrian strata, but the first protozoans with an external skeleton appear in the Upper Cambrian. C. franconianum is a primitive allogrominid ‘foraminiferid with an external ‘chitinoid’ membrane. It is from the Upper Cambrian of Wisconsin, USA.

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Chitinodendron franconianum A primitive foraminifer from the Upper Cambrian of Wisconsin, USA, which had an external ‘chitinoid’ membrane, making it one of the first protozoans with an external skeleton.

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