Source : Webster's Revised Unabridged Dictionary (1913)

Paleocarida \Pa`le*o*car"ida\, n. pl. [NL., fr. Gr. ? ancient +
   ?, ?, ?, a kind of crustacean.] (Zo["o]l.)
   Same as {Merostomata}. [Written also Pal[ae]ocarida.]