Phylembryo sentence example

phylembryo
  • Either before or just after turning, the mantle develops a larval shell termed the protegulum, and when this is completed the larva is termed the Phylembryo.
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  • The protegulum has been found in members of almost all the families of Brachiopod, and it is thought to occur throughout the group. It resembles the shell of the Cambrian .4 genus Iphidea [Paterina], and the Phylembryo is frequently referred to as the Paterina stage.
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  • In some orders the Phylembryo is succeeded by an Obolella stage with a nearly circular outline, but this is not universal.
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