Browsing by Author "Smith Paredes, Daniel"
Now showing items 1-6 of 6
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(Springer, 2015)Specialized morphologies of bird feet have evolved several times independently as different groups have become zygodactyl, semi-zygodactyl, heterodactyl, pamprodactyl or syndactyl. Birds have also convergently evolved ...
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(Universidad de Chile, 2015)
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(John Wiley and Sons Inc., 2017)© 2016 Wiley Periodicals, Inc. In early theropod dinosaurs—the ancestors of birds—the hallux (digit 1) had an elevated position within the foot and had lost the proximal portion of its metatarsal. It no longer articulated ...
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(WILEY-BLACKWELL, 2016)Birds have a distally reduced, splinter-like fibula that is shorter than the tibia. In embryonic development, both skeletal elements start out with similar lengths. We examined molecular markers of cartilage differentiation ...
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(Nature, 2015)Most birds have an opposable digit 1 (hallux) allowing the foot to grasp, which evolved from the non-opposable hallux of early theropod dinosaurs. An important morphological difference with early theropods is the twisting ...
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The developmental origin of zygodactyls feet and its possible loss in the evolution of passeriformes (Royal Society, 2014)The zygodactyl orientation of toes (digits II and III pointing forwards, digits I and IV pointing backwards) evolved independently in different extant bird taxa. To understand the origin of this trait in modern birds, we ...
