@article{oai:kagawa-u.repo.nii.ac.jp:00000481,
 author = {金子, 之史 and Kaneko, Yukibumi and 長谷川, 善和 and Hasegawa, Yoshikazu},
 issue = {1},
 journal = {日本生物地理学会会報, Bulletin of the Bio-geographical Society of Japan},
 month = {Nov},
 note = {A total of 680 isolated molars and three lower jaws with molars aged as of the late Pleistocene (25,800±900 y.B.P. and 26,800±1,300 y.B.P.) were recovered from the Pinza-Abu Cave, Miyako Island, the Ryukyu Islands, Japan, in 1982-83. All fossil molars with a prismatic enamel pattern are rootless. Among them 82 specimens of the first lower molars were identified as Microtus Fortis, five ones as M. oeconomus, and seven unidentified first lower molars were recorded. Without being assigned to genus, 74 specimens of the third upper molars have an intermediate form with four internal salient angles and with open dentine spaces between the first and second triangles following the anterior loop. Two speciments of the second upper molars were identified as M. oeconomus because of the occurrence of an additional reentrant fold in the second external closed triangles. The discovery of the fossil from the Miyako Island indicates the most southern distribution of M. fortis and M. oeconomus in the late Pleistocene, and disagrees with paleobotany and paleogeography previously reported., 琉球列島の宮古島のピンザアブ洞穴で、後期更新世(25,800±900y.B.P.と26,800±1,300y.B.P.)と判定された、680個の遊離臼歯と臼歯のついた3個の下顎骨が1982-83年に発掘された。化石臼歯はプリズム型のエナメル質をもち無根歯であった。82個の下顎第一臼歯のうち、70個はMicrotus fortis、5個はM. oeconomusと同定され、ほかに7個の特徴を記載した。74個の上顎第三臼歯には、下側に4個の凸角をもち前環うしろの第一と第二のエナメル三角形の象牙質が連合していたが、属の同定には至らなかった。2個の上顎第二臼歯には第二番目の閉鎖三角形の頬側に凹角がみられたので、M. oeconomusと同定された。宮古島での後期更新世のM. fortisとM. oeconomusの化石臼歯の発見は、今まで報告されていた古地理学や古植物学の見地とはことなっていた。},
 pages = {23--37},
 title = {琉球列島宮古島ピンザアブ洞穴における化石ハタネズミ科臼歯について},
 volume = {50},
 year = {1995},
 yomi = {カネコ, ユキブミ and ハセガワ, ヨシカズ}
}