| 单词 |
siphonotretacea |
| 释义 |
Siphonotretacea Siphonotretacea[¦sī·fə·nō·trə′tās·ē·ə] (paleontology) A superfamily of extinct, inarticulate brachiopods in the suborder Acrotretidina of the order Acrotretida having an enlarged, tear-shaped, apical pedicle valve. |
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