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THE EVOLUTION OF INSECTS, CHILOPODS, DIPLOPODS, CRUSTACEA AND OTHER ARTHROPODS INDICATED BY A STUDY OF THE HEAD CAPSULE.

Published online by Cambridge University Press:  31 May 2012

G. C. Crampton
G. C. Crampton
Affiliation:
Massachusetts Agricultural college, Amherst, Mass.
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Extract

The stucly of the arthropod head offers some of the most interesting and important evidence indicating the paths of development followed in the evolution of the various types of arthropods, but the evidence from this source has not been brought together, and nrost of the important types of head capsule have not been figured. The present paper, and the one following it, are offered with a view to supplying this needed information; and in these papers especial attention has been paid to the Crustacea, since these furnish the proto-types of many of the modifications met with in the Insecta, Chilopoda, Diplopoda, etc., and the carcinologists have neglected to furnish us with figures of these important forms.

Type
Articles
Information
The Canadian Entomologist , Volume 60 , Issue 6 , June 1928 , pp. 129 - 141
Copyright
Copyright © Entomological Society of Canada 1928

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References

1. —Some embryologists, however, maintain that the mandibular segment belongs with the first and second maxillary segments in the gnathocephalon, and if this be true, the mandibular segment would lie behind he archicephalic suture.