author(s)
Rachna Soan, Kajal Rai, Balwant Meshram, Gajendra Singh and Nishant Parmar

abstract
Morphological studies were performed on the six each atlas bone in ox (Bos indicus) and its comparison with another four different species of animals viz. horse (Equus ferus), dog (Canidae canis), goat (Capra hircus) and sheep (Ovies aries). The first cervical atypical vertebra was observed without body and spine. Anteriorly the atlas formed an atlanto-occipetal joint with skull that allows head nod up and down the vertebral column resulting nodding and rotational movements of the head. The cranial and caudal radius of neural ring of atlas was measured and thereafter calculated the area, circumference, ellipticity and linear eccentricity. The morphological characters of atlas were discovered in ox and also the differential features of the same bone were studied in other animal species as to Horse, Dog, Goat and Sheep. The dimensions which could be achieved in present study sufficiently determined the conical shaped neural ring at atlas. However, the remarkable finding in horses and goat doesn’t show much more ellipticity in comparison with others species attributing towards the difference of their feeding habits.