新发现的长吻型离龙(双孔亚纲：离龙目)幼年个体——袖珍蒙山龙,兼论新离龙类的个体发育
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袁梦, 李大庆, Daniel T. KSEPKA, 易鸿宇
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A juvenile skull of the longirostrine choristodere (Diapsida: Choristodera), Mengshanosaurus minimus gen. et sp. nov., with comments on neochoristodere ontogeny
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YUAN Meng, LI Da-Qing, Daniel T. KSEPKA, YI Hong-Yu
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Table 2 Tooth count from several specimens of neochoristoderes
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| Upper tooth row | Premaxilla | Maxilla | Lower tooth row | Mandibular symphysis | Posterior to the mandibular symphysis | Ikechosaurus sunailinae
(IVPP V 9611-1) | 68 | 4 | 64 | ~ 70 | ~ 22 | ~ 48 | Ikechosaurus sunailinae
(IVPP V 9611-3) | >43* | NA | >43* | >64** | NA | 42 | Ikechosaurus pijiagouensis
(IVPP V 13283) | NA | NA | NA | ~ 60 | NA | NA | Tchoiria namsarai
(PIN 3386/1) | >60* | NA | >60* | 75 | 17 | 60 | Tchoiria klauseni
(IGM 1/8) | >34* | NA | >34* | NA | 12 | NA | | Simoedosaurus lemoinei (MNHN R1935) | ~45 | 4 | ~41 | NA | NA | NA | | Simoedosaurus dakotensis (SMMP.76.10.1) | ~49 | 4 | ~45 | NA | NA | NA | Champsosaurus lindoei
(CMN 8920) | 47 | 6 | 41 | NA | NA | NA | | Mengshanosaurus minimus (IVPG-T002) | 42-43 | 4-5 | 38-39 | 45 | 12 | 33 |
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