In summary, the rift model as presented by Schlische and Withjack (2005) is related only to the Doylestown subbasin - they do not discuss the lithosome relationships throughout the remainder of the basin. But, even in the Doylestown subbasin, their model raises more questions than it answers. They have not demonstrated that syndepositional faulting actually occurred - instead, they only present evidence to support a preconceived fault model, and even some of the evidence they cite is inconsistent with their rift hypothesis. Rift tectonism is not a good m odel for the Birdsboro basin, as seductively simple as such a model may seem. Many aspects of the basin are not explained by rifting. That is why the focus in the original Birdsboro basin paper (Faill, 2003) was only on the sediments, their distributions, and the inferences that could be made therefrom. Discussion of how the basin formed and the overall causative tectonics was eschewed in order to avoid the introduction of preconceived notions (half-graben, rift tectonism). It is hoped that a better understanding of the sediment content and its distribution will help in developing a tectonic model that fully explains the origin, development, and subsequent history of the entire Birdsboro basin.