Figure 1: The oldest known fossil of an arthropod in the act of moulting: Marrella splendens, from the Middle Cambrian Burgess Shale of British Columbia, Canada. | Nature

Figure 1: The oldest known fossil of an arthropod in the act of moulting: Marrella splendens, from the Middle Cambrian Burgess Shale of British Columbia, Canada.

From: Moulting arthropod caught in the act

Figure 1

a, Specimen of M. splendens (ROM 56781) emerging and pulling out the flexible lateral spines from the old exoskeleton (exuvia). b, Camera lucida drawing of the same specimen. Scale bar for a and b, 5 mm. c, Reconstruction of Marrella (modified from ref. 8).

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