لسان متشعب
مراجع

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↑  Bill Hilton Jr (12 يونيو 2007). "Hummingbird Internal Anatomy and Physiology". Operation RubyThroat: The Hummingbird Project. Hilton Pond Center for Piedmont Natural History. مؤرشف من الأصل في 2023-04-27. اطلع عليه بتاريخ 2008-02-13. The tongue itself splits in the floor of the mouth
↑  Monkeyland. "Bushbaby - Galago moholi". Meet Our Primates. Monkeyland Primate Sanctuary. مؤرشف من الأصل في 2007-10-22. اطلع عليه بتاريخ 2008-02-13. equipped with a second, pointy tongue underneath their normal one
↑  Niles' Register, June 13, 1829
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