| 释义 |
axonost Ichthyol.|ˈæksəʊnɒst|
[f. Gr. ἄξων + ὀστ-έον bone.]
In fishes, one of the interspinal bones; the basal portion of a fin-ray.
1887E. D. Cope in Amer. Naturalist XXI. 1017, I first used the terms axial and basilar for these segments... Those who prefer a substantive appellation for these elements may call them axonosts and baseosts... The axonost is sometimes represented by more than one segment,—e.g., Dipnoi... The pelvic element so called is the axonost of this fin. 1898A. S. Woodward Outl. Vertebrate Palæont. 21 Median fins..rods of cartilage, each segmented into three pieces... The outer (distal) element is termed a baseost, the inner (proximal) element an axonost. |