The Collaborative International Dictionary
Siphoniferous
Siphoniferous \Si"phon*if"er*ous\, a. [Siphon + -ferous.] (Zo["o]l.) Siphon-bearing, as the shell of the nautilus and other cephalopods.
Wiktionary
siphoniferous
a. (context zoology English) siphon-bearing.