Project 4074: M. A. Gandolfo, K. C. Nixon, W. L. Crepet, G. E. Ratcliffe, L. H. Hortorium. 2000. Sorophores ofLygodium Sw. (Schizaeaceae) from the Late Cretaceous of New Jersey. Plant Systematics and Evolution. 221 (1-2):113-123.
This project has 12 taxa.