MolluscaBase name details
Pectunculus derelectus Yokoyama, 1928 †
1766954 (urn:lsid:marinespecies.org:taxname:1766954)
unaccepted > superseded combination
Species
Pectunculus Lamarck, 1799 accepted as Tucetona Iredale, 1939
marine, brackish, fresh, terrestrial
fossil only
Yokoyama M. (1928). Neogene shells from the oil-field of Higashiyama, Echigo. <em>Journal of the Faculty of Science, Imperial University of Tokyo. Section II, Geology, Mineralogy, Geography, Seismology.</em> 2(7): 351–362, pls. 68–69., available online at http://umdb.um.u-tokyo.ac.jp/DKoseibu/pdf/Ref_0495_.pdf
page(s): 361 [details]
page(s): 361 [details]
MolluscaBase eds. (2025). MolluscaBase. Pectunculus derelectus Yokoyama, 1928 †. Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1766954 on 2025-09-11
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original description
Yokoyama M. (1928). Neogene shells from the oil-field of Higashiyama, Echigo. <em>Journal of the Faculty of Science, Imperial University of Tokyo. Section II, Geology, Mineralogy, Geography, Seismology.</em> 2(7): 351–362, pls. 68–69., available online at http://umdb.um.u-tokyo.ac.jp/DKoseibu/pdf/Ref_0495_.pdf
page(s): 361 [details]
new combination reference Makiyama, J. (1959) Matajiro Yokoyama's Tertiary fossils from various localities in Japan. Palaeontological Society of Japan Special Papers, 5, 1-4, pls. 56-86. NIZT 682 [details]
page(s): 361 [details]
new combination reference Makiyama, J. (1959) Matajiro Yokoyama's Tertiary fossils from various localities in Japan. Palaeontological Society of Japan Special Papers, 5, 1-4, pls. 56-86. NIZT 682 [details]
