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...
- 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...
- 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...
- radula have the formula 120 . 2 . 8 . 1 . 8 . 2 . 120 (130 . 1 . 130). The rhachidian tooth is tricuspid. The eight inner laterals are bicuspid and broad, forming...
- and visceral hump. digestive system: the radula formula is 57–59×1.1.?; rhachidian tooth with 3–4 denticles per side. reproductive system: the hollow curved...
- 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...
- The jaws are developed or absent. The radula is rhipidoglossate. The rhachidian teeth are always present and well-developed. The lateral teeth generally...
- about ⅓ mm in breadth. It has about 20 transverse rows of teeth; the rhachidian tooth is broad, depressed quadrangular with rounded upper angles and pointed...
- concave at the outer side. The radula has the teeth in about 48 rows. The rhachidian tooth (R) has a rounded body, with crooked hooks at the angles of the...