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Tooth Replacement Pattern in Nyctalus velutinus
Author(s): SHI Hong-Yan, LIU Hao, WU Yi, HU Jin-Chu
Pages: 125-
129
Year: 2010
Issue:
1
Journal: Chinese Journal of Zoology
Keyword: NyctaluS velutinus; Chlroptera(Bats); Tooth replacement;
Abstract: 笔者于1997年对中华山蝠(Nyctalus velutiaus)牙齿的脱换模式进行了研究.共观察幼蝠200只次.中华山蝠初生仔共有22枚乳齿,齿式为2.1.2.0/3.1.2.0,各乳齿略向舌侧倾斜,除乳前臼齿齿冠不分叉外,其余乳齿齿冠均分为三叶.4 d龄开始换齿,31 d龄左右脱换完毕.乳齿的脱落顺序是:上颌,PM~2→PM~1→C~1→I~1→I~2;下颌,I_1→PM_2I_2→I_3PM...
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