The Collaborative International Dictionary
Decapodal
Decapodal \De*cap"o*dal\, Decapodous \De*cap"o*dous\, a. (Zo["o]l.) Belonging to the decapods; having ten feet; ten-footed.
Wiktionary
decapodal
a. (context zoology English) Belonging to the decapods; having ten foot.