By Callum F. Ross, Richard F. Kay
This moment version may be an edited quantity of curiosity to those that do learn and train in regards to the evolution of primates. It goals to exhibit to primatologists, anthropologists, palaeontologists, and neuroscientists the newest stories of primate phylogeny, the anthropoid fossil list, the evolution of the primate visible procedure, and the beginning of the anthropoid social platforms. This identify encompasses a CD-ROM and colour figures.
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Additional info for Anthropoid Origins: New Visions
Were the postorbital septum not present , contractions of temporalis would disturb the visual system. Thus, Ross (1996) agreed with Cartmill that the postorbital septum probably evolved to protect the eye from movements in the temporal fossa. However, rather than seeing increasing visual acuity as the driving force behind evolution of the septum (Cartmill, 1980), Ross suggested that changes in orbit orientation would necessitate the evolution of a septum, even in the absence of enhanced visual acuity.
Origins of Crown Anthropoids Debate concerning cladogenesis within early anthropoids centers around the phyletic positions of the Oligopithecidae and Parapithecidae (and some would say Amphipithecidae) relative to platyrrhines and catarrhines. Late Eocene anthropoids are best preserved and most abundant in several Egyptian localities. Two principal groups-Propliopithecidae and Parapithecidae-are universally recognized. , 1994). Placements of other taxa are more controversial. , 1994). , 1979) or a stem anthropoid (Hofstetter, 1980).
Cuvier believed that when God created animals, He gave them forms that enabled them to function in their environment. Therefore, to construct a classification that recreated the natural system, and thereby to understand the works of the Creator, one had to use the structures that were used by animals to function in their environment. Thus, in a teleological sense, Cuvier provided a functional explanation for the structure of organisms, and by extension, also their natural groupings. In accordance with these principles, Cuvier defined Singes-which had been elevated to familial rank by discoveries of new species-as: Quadrumana with four straight incisors to each jaw, and flat nails to all the extremities-two characters which approximate them more nearly to Man than the subsequent genera.
Anthropoid Origins: New Visions by Callum F. Ross, Richard F. Kay