Left panel: spatial distribution of the TBOSS sample across the Taurus molecular cloud (shown in the map of extinction from Dobashi et al. 2005). Black squares indicate Class I objects, blue circles indicate Class II objects, and red crosses indicate Class III objects. Top right panel: distribution of the TBOSS sample with Herschel PACS detections. Bottom, right panel: distribution of the TBOSS sample with Herschel PACS upper limits.