leptocephalous


lep·to·ceph·a·lous

(lep'tō-sef'ă-lŭs), Having an abnormally tall, narrow cranium. [lepto- + G. kephalē, head]

leptocephalic

adjective
(1) Having or referring to an elongated narrow cranium;
(2) Having or referring to an abnormally small skull (rarely used and etymologically incorrect); e.g., microcephalic.

lep·to·ceph·a·lous

(lep'tō-sef'ă-lŭs) Having an abnormally tall, narrow cranium. [lepto- + G. kephalē, head]