Complex sentence: Following their convictions, Echols, Misskelley and Baldwin submitted imprints of their teeth that were compared to alleged bite-marks on Stevie Branch's forehead not mentioned in the original autopsy or trial.
Split into simpler sentences: Following their convictions, Echols, Misskelley and Baldwin submitted imprints of their teeth. These were compared to the alleged bite-marks on Stevie Branch's forehead that had not been mentioned in the original autopsy or trial.