Definition of Rhachidian. Meaning of Rhachidian. Synonyms of Rhachidian

- radula is heterodont, also known as heteroglossan, in which the middle or rhachidian tooth in each array has multiple cusps and the lateral teeth are unicuspid...
- The jaws are developed or absent. The radula is rhipidoglossate. The rhachidian teeth are always present and well-developed. The lateral teeth generally...
- and the shape of the teeth agrees with that of the known species. The rhachidian tooth has a subquadrate body, narrower in front, with concave upper and...
- the median rows, and cross even the uncini of the opposite side. The rhachidian or median tooth has a subquadrate basal part, with rounded, convex posterior...
- It is closely applied to the s****. The long radula has a long, narrow rhachidian tooth. It is lanceolate with its tip narrowand recurved. There are 26...
- perhaps by erosion. The inside of the s**** has a smooth surface. The rhachidian tooth of the radula is elongate with convex sides. It has no reflected...
- central part are very thin and transparent, without distinct cusps; the rhachidian tooth (R) is broadly winged, bow-shaped, at its upper part it is thickened...
- 26 rows of teeth and 7 median rows, with a large number of uncini. The rhachidian tooth has a subquadrate body with winged sides and a long triangular cusp...
- (radula with a descending and ascending limb) The radula has a strong rhachidian tooth The large, internal lateral eyes closely ****ociated with the cerebral...
- surface under the microscope. The quite minute radula is peculiar. The rhachidian and (on each side) five laterals have broad simple bases with a pear-shaped...