title: Rolled liverwort mats explain major Prototaxites features: Response to commentaries.
abstract: In volume 97(2) of the American Journal of Botany (pp. 268-275), we published an article entitled "Structural, physiological, and stable carbon isotopic evidence that the enigmatic Paleozoic fossil Prototaxites formed from rolled liverwort mats". Here, we respond to a letter and a commentary on our article in the present issue, welcoming this opportunity to continue the scientific dialogue about an issue that has long been stimulating and controversial. For the reader's benefit, we first briefly describe the recent scholarly context of our article.
authors: Department of Botany, University of Wisconsin, Madison, Wisconsin 53706-1381 USA.
authors: Linda E
authors: LE
authors: Graham
authors: Martha E
authors: ME
authors: Cook
authors: David T
authors: DT
authors: Hanson
authors: Kathleen B
authors: KB
authors: Pigg
authors: James M
authors: JM
authors: Graham