Bibliography and Index of the Sirenia and Desmostylia  

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"Giffin, Emily B."

Giffin, Emily B.: SEE ALSO Buchholtz, Emily A. (detail)
x
 
 Giffin, Emily B.; Gillett, Michelle (detail)
   
1996
Neurological and osteological definitions of cervical vertebrae in mammals.
Brain Behav. Evol. 47(4): 214-218. 3 figs.
–Concludes from dissections of T. manatus cervical nerves that the presence of only six cervical vertebrae in manatees reflects a developmentally early reorganization of predetermined cervical mesoderm into fewer segments, rather than ontogenetic elimination of a vertebra without corresponding reduction of spinal root number. The relationship of the limb and its innervation to the cervical-thoracic boundary has not been altered.
Daryl P. Domning, Research Associate, Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, D.C. 20560, and Laboratory of Evolutionary Biology, Department of Anatomy, College of Medicine, Howard University, Washington, D.C. 20059.
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