Shell orientation terminology among the Bivalvia (Mollusca): Problems and proposed solutions

@article{Bailey2009ShellOT,
  title={Shell orientation terminology among the Bivalvia (Mollusca): Problems and proposed solutions},
  author={Jack Bowman Bailey},
  journal={Journal of Paleontology},
  year={2009},
  volume={83},
  pages={493 - 495}
}
  • J. B. Bailey
  • Published 1 May 2009
  • Environmental Science
  • Journal of Paleontology
Traditional terms used to describe shell orientation in bivalves are unsatisfactory in three important ways: 1) for poorly known bivalve taxa, unbiased and directionally neutral terms are sometimes needed to replace anterior and posterior where data are incomplete; 2) there is a striking absence of simple terms to apply to the long and short ends of the shell; and 3) the term lateral is either incorrectly or inconsistently applied. in the following discussion, I shall explore each of these… 
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