^MEYER-BERTHAUD B., SCHECKLER S. E., WENDT J., "Archaeopteris is the earliest known modern tree",Nature, 1999,398, 6729, 700-701
^ GERRIENNE Philippe, STEEMANS Philippe, GENSEL Patricia G., LARDEUX Hubert, PRESTIANNI Cyrille, "A Simple Type of Wood in Two Early Devonian Plants"Science, 2011,333, 6044, 837.
^MILLER R. F., TURNER S., CLOUTIER R., "The oldest articulated chondrichthyan from the Early Devonian period",Nature, 2003,425, 6957, 501-504
^abMURPHY A. E., SAGEMAN B. B., HOLLANDER D. J., "Eutrophication by decoupling of the marine biogeochemical cycles of C, N, and P: A mechanism for the Late Devonian mass extinction."Geology, 2000,28, 5, 427-430.
^JOACHIMSKI M. M., BUGGISCH W., "Conodont apatite δ18O signatures indicate climatic cooling as a trigger of the Late Devonian mass extinction."Geology, 2002,30, 8, 711-714.
Henrik Glenner, Philip Francis Thomsen, Martin Bay Hebsgaard, Martin Vinther Sorensen, Eske Willerslev, "The Origin of Insects",Science, 2006,314, 5807, 1883-1884
Michael S. Engel and David A. Grimaldi,"New light shed on the oldest insect",Nature, 2004,427, 6975, 627-630
