The Fossil Calibration Database, A New Resource for Divergence DatingDOI: info:10.1093/sysbio/syv025v. 64No. 5Oxford University Press853–859
Ksepka, Daniel T., Parham, James F., Allman, James F., Benton, Michael J., Carrano, Matthew T., Cranston, Karen A., Donoghue, Philip C. J., Head, Jason J., Hermsen, Elizabeth J., Irmis, Randall B., Joyce, Walter G., Kohli, Manpreet, Lamm, Kristin S., Leehr, Dan, Patané, José S. L., Polly, P. David, Phillips, Matthew J., Smith, N. Adam, Smith, Nathan D., van Tuinen, Marcel, Ware, Jessica L., and Warnock, Rachel C. M. 2015. "The Fossil Calibration Database, A New Resource for Divergence Dating." Systematic Biology, 64, (5) 853–859. https://doi.org/10.1093/sysbio/syv025.