Fossils of Blood Vessels

Abstract

In this paper, the writter described the fossils of Arteria alveolaris mandibularis and Vena alveolaris mandibularis on the left lower second molar tooth (2M) of Desmostylella typica, NAGAO which had been found in the marine Miocene formation of Japan. (Yuda, Kitagami-mura, Ninohe-gun, Aomori Pref.)