Tiny teeth of consequence: Vestigial antemolars provide key to Early Miocene soricid taxonomy (Eulipotyphla: Soricidae)

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• 作者：Johannes Klietmann ; Doris Nagel ; Michael Rummel ; Lars W. van den Hoek Ostende
• 关键词：Miosorex ; Paenelimnoecus ; Antemolar reduction ; Germany ; Miocene ; Soricidae
• 刊名：Comptes Rendus Palevol
• 出版年：2013
• 出版时间：June-July, 2013
• 年：2013
• 卷：12
• 期：5
• 页码：257-267
• 全文大小：1473 K

文摘

In the soricid fauna of the Early Miocene Petersbuch 28 fissure fill from Bavaria, Germany, specimens of Miosorex desnoyersianus (Lartet, 1851) and Paenelimnoecus micromorphus (Doben-Florin, 1964) retain a tiny penultimate antemolar. This antemolar was previously unknown for P.?micromorphus, because the tiny antemolar has not been preserved until now. Miosorex desnoyersianus retains the rudimentary tooth; its possible function was to keep the p4 in upright position. The younger species of Paenelimnoecus have lost this vestigial tooth. Based on the alveoli, Miosorex pusilliformis is interpreted as a junior synonym of M.?desnoyersianus, and the diagnoses of Miosorex desnoyersianus and Paenelimnoecus micromorphus are emended.