Field and Laboratory
Recently, in order to arrive at a satisfactory answer to a moot question on the anatomy of the urodele, Necturus, I dissected 8 males and 5 females (varying in length from 25 to 39 centimeters). The problem involved was the existence or non-existence of cartilaginous inscriptiones tendineae in the myocommata of the ventral pectoral region; and the further question as to whether these cartilaginous elements, if generally found, are to be considered metamerized rudiments or sternebrae that have been arrested in their development (or, more loosely, constitute an ontogenetically-arrested sternum).
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Harris, Joseph P. Jr.
"The “Sternum” in Necturus,"
Field and Laboratory: Vol. 23
Available at: https://scholar.smu.edu/fieldandlab/vol23/iss3/2