Journal of Paleontology; March 2009; v. 83; no. 2;
p. 280-292; DOI: 10.1666/08-113.1
© 2009 Paleontological Society
Nanshanophyllum and Shensiphyllum (Silurian Rugosa) from the Kurosegawa Terrane, Southwest Japan, and Their Paleobiogeographic Implications
Erika Kido1
1 Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, People's Republic of China, <erikakido07{at}yahoo.co.jp>
Three rugose species in two genera—Nanshanophyllum hamadai n. sp., N. gokasense n. sp., and Shensiphyllum sp.—are described for the first time from the Kurosegawa Terrane, Southwest Japan. These species occur in the Middle Member of the Gionyama Formation, which is Late Llandovery to Early Ludlow (Silurian) in age. The two genera, Nanshanophyllum and Shensiphyllum, formerly were known only from South China and Qaidam. The occurrence of these two genera in Japan may indicate a paleogeographic connection between Proto-Japan and the South China Block during the Silurian.
Copyright © 2009 by Paleontological Society