1) Arthropod genus 2) Genus palaemon 3) Sea god who rode a dolphin 4) Type genus of the family idae 
[genus] Palaemon is a genus of caridean shrimp of the family Palaemonidae. The genus contains the following species: The conventional circumscription of the genus Palaemon is probably paraphyletic. Molecular data suggest that Palaemonetes, as well as the genera Exopalaemon and Couteriella, are nested within Palaemon. Phylogenetic affinities...[mythology] Palaemon (Παλαίμων), originally named Melicertes, was a minor, young sea god, son of Ino (Leucothea). He was deified by the gods when his mother threw herself from atop a cliff with Palaemon in her arms, arguably to escape insanity or to escape Athanas, King of Thebes at the time, and his father was driven to a murderous...
[n] - type genus of the family Palaemonidae
genus Palaemon noun type genus of the family Palaemonidae; widely distributed genus