title: A 5000-year fossil record of larval shell morphology of submarine cave microshells.
abstract: A 5000-year fossil series of minute submarine cave bivalves was studied using morphometric and evolutionary analyses. The obtained results indicate that the shapes of larval shells of studied species were labile, whereas the size of the larval shell was stable in each species studied. This result is different than that previously reported in most other studies in which size change is more common than shape change. This unique evolutionary pattern of these bivalves might be attributed to their refugial lifestyle.
authors.affiliation: Institute of Geosciences, Shizuoka University, Suruga-ku, Shizuoka, Japan. sbtubuk@ipc.shizuoka.ac.jp
authors.forename: Takao
authors.initials: T
authors.lastname: Ubukata
authors.forename: Akihisa
authors.initials: A
authors.lastname: Kitamura
authors.forename: Mayumi
authors.initials: M
authors.lastname: Hiramoto
authors.forename: Tomoki
authors.initials: T
authors.lastname: Kase
mesh_terms: D000818:Animals; D005075:Biological Evolution; D049872:Bivalvia / Q000145:classification / Q000235:genetics*; D005580:Fossils; D007564:Japan; D012623:Seawater