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1 January 2009 A 5000-YEAR FOSSIL RECORD OF LARVAL SHELL MORPHOLOGY OF SUBMARINE CAVE MICROSHELLS
Takao Ubukata, Akihisa Kitamura, Mayumi Hiramoto, Tomoki Kase
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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.

©2009 The Society for the Study of Evolution.
Takao Ubukata, Akihisa Kitamura, Mayumi Hiramoto, and Tomoki Kase "A 5000-YEAR FOSSIL RECORD OF LARVAL SHELL MORPHOLOGY OF SUBMARINE CAVE MICROSHELLS," Evolution 63(1), 295-300, (1 January 2009). https://doi.org/10.1111/j.1558-5646.2008.00546.x
Received: 9 February 2008; Accepted: 1 September 2008; Published: 1 January 2009
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KEYWORDS
Cavernicolous bivalve
eigenshape analysis
evolutionary analysis
microevolution
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