throwback

n.	1.	the reappearance in an organism of characteristics of an earlier ancestral type; atavism.
	2.	an organisms having characteristics of an earlier ancestral type.

Noun	1.	throwback - an organism that has the characteristics of a more primitive type of that organism Synonyms: atavist
	2.	throwback - a reappearance of an earlier characteristic Synonyms: atavism, reversion
Adj.	1.	throwback - characteristic of an atavist Synonyms: atavistic

atavism, backset, backsliding, backward deviation, backward motion, backward step, check, comedown, descent, down, falling back, lapse, reaction, recession, recidivation, recidivism, recrudescence, recurrence, reentry, refluence, reflux, regress, regression, relapse, renewal, retroaction, retrocession, retroflexion, retrogradation, retrogression, retrusion, return, reversal, reverse, reverse of fortune, reversion, rollback, setback, severe check, sternway