The study of bifurcated rib and costal catrtilage was done at S. R. T. R. Medical College, Ambajogai. Total 30 cadavers were studied during 1997 to 2001. Bifurcation of rib and costal cartilage was found in one cadaver. Left third rib bifurcated and joined with its bifurcated costal cartilage to create an additional intercostals space. This additional intercostals space bears the intercostals muscles. The muscle fibres were in two layers and in the direction of that of the external intercostal and internal intercostal muscles respectively. These intercostal muscles were supplied by a branch of left third intercostal nerve. This bifurcated rib and costal cartilage created an additional intercostals space, which is important for the forensic expert while doing post mortems examination & describing the thoracic injuries. It may prove very useful for a forensic expert to establish identity of a person.

Key words: Rare Anomaly, Bifurcated Rib, Costal Cartilage, intercostals space, forensic