 | Richard Owen - 1866 - 734 pages
...notched, so as to resemble the mammillated margins of the unworn plates of the elephant's grinder. These ridges or dentations do not extend beyond the...the crown : the longitudinal ridges are continued farther down, especially the median ones, which do not subside till the fang of the tooth begins to... | |
 | Richard Owen - 1866 - 700 pages
...notched, so as to resemble the mammillated margins of the unworn plates of the elephant's grinder. These ridges or dentations do not extend beyond the...the crown : the longitudinal ridges are continued farther down, especially the median ones, which do not subside till the fang of the tooth begins to... | |
 | Charles Knight - 1867 - 556 pages
...relative width of these grooves varies in different teeth; sometimes a fourth small longitudinal ridge ia developed on the outer side of the crown. The marginal...the crown ; the longitudinal ridges are continued farther down, especially the median ones, which do not subside till the fang of the tooth begins to... | |
 | Charles Knight - 1867 - 556 pages
...relative width of these grooves varies in different teeth; sometimes a fourth small longitudinal ridge U developed on the outer side of the. crown. The marginal...the crown ; the longitudinal ridges are continued farther down, especially the median ones, which do not subside till the fang of the tooth begins to... | |
 | British Association for the Advancement of Science. Meeting - 1842 - 540 pages
...and coated by a layer of enamel, but beyond this point the description of the tooth of the Igwmodon indicates characters peculiar to that genus. In most...the marginal ridges. These ridges or dentations do net-extend beyond the expanded part of the crown : the longitudinal ridges are continued further down,... | |
 | Richard Owen - 2003 - 472 pages
...power (fig. 78), the form of transverse ridges, themselves notched, so as to resemble the mannnilatecl margins of the unworn plates of the elephant's grinder...upon the sides of the marginal ridges. These ridges Fig 78 or dentations do not extend beyond the expanded Marginal ridges , ,, ., , ., T •• • i... | |
| |
U developed on the outer side of the. crown. The marginal serrations which at first sight appear to be simple notches, as in the Iguana, present under a low magnifying power the form of transverse ridges, themselves notched so as to resemble the mammillated... 