Recent results in b-hadron Spectroscopy from CDF and DO

Integrated luminosities above 1 fb-1 at CDF and DO, as well as new triggers capable of selecting events with high-impact parameter tracks, have been enormously beneficial for the study of b-hadron spectroscopy. The two experiments have reconstructed the L=1 B0** mesons decaying into the B(*)+π- final states as well as L=1 strange bottom mesons Bs** decaying into B(*)+K-. Recently the JP=1/2+ baryons Σb+ (buu), their isospin partners Σb- (bdd), and their JP=3/2+ exited states have been seen in decays to Λbπ±. These discoveries are accompanied by precise mass measurements that can be compared to theoretical predictions. Data samples continue to increase and further progress in b-hadron spectroscopy can be expected from Tevatron data