Editing Lavanify (section)

==Description==
''Lavanify'' is known from the complete cheektooth UA&nbsp;8653 and the broken tooth FMNH PM 59520. Krause and colleagues could not determine whether the teeth were from the lower or upper jaw and whether they were molars or molariform (molar-like) [[premolar]]s, but suggested that they represented two different tooth positions.<ref name=Kea504/> However, Wilson and colleagues in 2007 tentatively identified UA&nbsp;8653 as a left fourth (last) lower molariform (mf4); because molars and premolars of gondwanatheres cannot be reliably distinguished, the term "molariform" is used instead.<ref>Wilson et al., 2007, pp.&nbsp;522, 526</ref> FMNH PM 59520 resembles the ''Gondwanatherium'' fossil MACN Pv-RN 1027,<ref>Gurovich, 2005, p. 383</ref> a broken tooth that may be an upper molariform.<ref>Gurovich, 2005, p. 359</ref> In both ''Lavanify'' teeth, the enamel surface features [[perikymata]] (ridges and grooves arranged in a transverse, wave-like pattern).<ref name=Wea526/>

UA&nbsp;8653, the [[holotype]], is hypsodont and curved. It is 11.2&nbsp;mm high, of which the crown makes up about 85%, and the dimensions of its crown are 3.4 x 3.2&nbsp;mm. The [[Occlusion (dentistry)|occlusal]] (chewing) surface is worn flat and contains a V-shaped island of [[dentine]] surrounded by [[tooth enamel|enamel]]. One side of the crown lacks enamel.<ref name=Kea504/> Between the two arms of the V, at the lingual (inner) side of the tooth,<ref name=Wea526>Wilson et al., 2007, p.&nbsp;526</ref> is a furrow filled with [[cementum]], which extends all the way through the tooth; the presence of such a long furrow distinguishes it from ''Gondwanatherium''. The enamel is made up of small, round prisms (bundles of [[hydroxyapatite]] crystals) that are separated by large, continuous bands of [[interprismatic matrix]] (IPM; the material between the enamel prisms).<ref name=Kea504/>

FMNH PM 59520 is 9.8&nbsp;mm high. It is similar in many respects to UA&nbsp;8653, but is less curved and its occlusal surface contains a large [[wikt:infundibulum|infundibulum]] (funnel-shaped cavity), filled with cementum and surrounded by enamel that penetrates deeply into the tooth. There is also either a second infundibulum or a cementum-filled furrow. The differences in degree of curvature and occlusal morphology suggest that this tooth represents a different tooth position than UA&nbsp;8653. Krause and colleagues tentatively placed this tooth in ''Lavanify'' in view of the considerable variation among other gondwanathere teeth of a single species and in the absence of evidence to the contrary.<ref name=Kea505>Krause et al., 1997, p.&nbsp;505</ref>