@article{oai:tohoku.repo.nii.ac.jp:00010819,
 author = {Kilmer, Frank H.},
 journal = {Science reports of the Tohoku University. 2nd series, Geology. Special volume = 東北大学理科報告. 地質学},
 month = {Feb},
 note = {application/pdf, A study of Recent and paleontologic evidence of Clinocardium nuttallii (Conrad) from Japan, and that from elsewhere in Asia and western North America, supports the following conclusions (1) Clinocardium nuttallii (Conrad) is a valid species in coastal waters of the Kushiro-Akkeshi area, southeastern Hokkaido, (2) there is no valid evidence for C. nuttallii in the fossil record of Japan, and (3) C. nuttallii probably originated in the northern or northeastern Pacific during Miocene or Pliocene time, dispersing southwestward to Sakhalin and Kamchatka during the Pleistocene and to Japanese shores during the Recent., 紀要類(bulletin), 1942016 bytes},
 pages = {29--"35-4"},
 title = {The Cockle, Clinocardium nuttallii (Conrad) in Japan},
 volume = {6},
 year = {1973}
}