Abstract
III.
I HAVE found much resemblance between the skeleton of the ventral and the dorsal fins in Notidanus, in Chiloscyllium, and in Raia; also between the anal and ventral fins in Notidanus. The ventral fins of elasmo-branchs generally are so different from their pectoral fins, and so much more like the azygos fins than the pectorals are, that they serve well to bridge over the differences between the orders of fins. At the same time the value of the link is enhanced by the fact that in the very peculiar genera Callorhynchus and Chimæra the ventrals resemble the pectorals in a very remarkable and exceptional manner. But perhaps the most instructive ventral fin is that of Polyodon, the skeleton of which consists simply of a double series of simple parallel rays without any attachment to a pelvic cartilage which is altogether absent.
Article PDF
References
See Trans. Connecticut Academy, vol. ii.
See "Morphol. Jahrbuch" vol. ii. 3rd Heft, p. 421, P1. 29.
Quarterly Journal of Micros. Science, October, 1877, pp. 432, 433.
Rights and permissions
About this article
Cite this article
MIVART, S. THE GENESIS OF LIMBS 1 . Nature 18, 331–334 (1878). https://doi.org/10.1038/018331d0
Issue Date:
DOI: https://doi.org/10.1038/018331d0