Entomology by Cedric Gillott (auth.)

By Cedric Gillott (auth.)

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Likewise, there are great differences in the structure of the compound eyes among the major groups, and even the monophyleticists disagree over the homologies of the segments that make up the arthropod head. The polyphyleticists, led by Tiegs and Manton (1958), Anderson (1973), and Manton (1964, 1973, 1977), also presented direct evidence to support their theory, largely from comparative embryology and functional morphology but more recently from paleontology. 10). The phyla are the Chelicerata (excluding the trilobites whose relationships remain unclear), the Crustacea, and the Uniramia (Onychophora-Myriapoda- Hexapoda).

Soc. 45:295-308. ] 33 INSECT DIVERSITY 34 CHAPTER 2 preserved, * especially from the Devonian and Lower Carboniferous periods during which a great adaptive radiation of insects occurred. By the Permian period, from which many more fossils are available, almost all of the modem orders had been established. Misidentification of fossils and misinterpretation of structures by early paleontologists led to their drawing incorrect conclusions about the phylogeny of certain groups and the construction of rather confusing nomenclature.

70:236-255. Manton, S. , 1949, Studies on Onychophora. VII. The early embryonic stages of Peripatopsis, and some general considerations concerning the morphology and phylogeny of the arthropods, Phi/os. Trans. R. Soc. London Ser. B 233:483-580. Manton, S. , 1964, Mandibular mechanisms and the evolution of arthropods, Philos. Trans. R. Soc. London Ser. B 247:1-183. Manton, S. , 1972, The evolution of arthropod locomotory mechanisms. Part 10. Locomotory habits, morphology and evolution of the hexapod classes, Zool.

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