Fossil evidence for Cretaceous escalation in angiosperm leaf vein evolutionDOI: info:10.1073/pnas.1014456108v. 108No. 20National Academy of Sciences (U.S.)8363–8366
Feild, Taylor S., Brodribb, Timothy J., Iglesias, Ari, Chatelet, David S., Baresch, Andres, Upchurch, Garland R., Jr., Gomez, Bernard, Mohr, Barbara A. R., Coiffard, Clement, Kvacek, Jiri, and Jaramillo, Carlos A. 2011. "Fossil evidence for Cretaceous escalation in angiosperm leaf vein evolution." Proceedings of the National Academy of Sciences of the United States of America, 108, (20) 8363–8366. https://doi.org/10.1073/pnas.1014456108.