PROSIPHON
Source: 567
Pro‐si″phon (?), n. [[Pref. pro- for + siphon.]] (Zoöl.) A minute tube found in the protoconch of ammonites, and not connected with the true siphon.
Source: 567
Pro‐si″phon (?), n. [[Pref. pro- for + siphon.]] (Zoöl.) A minute tube found in the protoconch of ammonites, and not connected with the true siphon.