In CLS v. CLJ, 693 P.2d 774 (Wyo. 1985), the appellant failed to appear at trial, and his suit to establish paternity was dismissed with prejudice pursuant to W.R.C.P. 41(b). A second suit raising the same claim was subsequently filed. The Court held that the appellant was barred by the doctrine of res judicata from bringing the same claim because an involuntary dismissal under Rule 41(b) operated as an adjudication of the merits. 693 P.2d at 777.