| Study | Phylegenetic depth | Eupolypods/ Ferns sampled | Characters used | Dating methods | Eupolypods/Ferns Fossils used |
| Du et al. [9] | Polypodiales | 162/214 | Plastid 84 protein-coding genes and four rRNA genes,76 448 bp | penalized likelihood (treePL), Bayesian inference (BEAST), three root age constraints | node calibrations 6/14 |
| Qi et al. [6] | Vascular plants: ferns, lycophytes, seed plants | 70/129 | 935, 501, 348, 267 and 146 nuclear gene sets from transcriptomes | penalized likelihood (treePL) | node calibrations 4/17 |
| Rothfels et al. [5] | Ferns, seed plants | 31/73 | 25 nuclear loci 35 877 bp from transcriptomes | Bayesian methods (MrBayes version 3.2.2) | second node calibrations, 2/12 |
| Regalado et al. [8] | Eupolypods | 199/203 | Three plastid genes (rbcL, atpA, and atpB; 3826 bp) | Rating dating, i.e., using the standard substitution rate for plastid DNA | No calibrations 0/0 |
| Testo and Sundue [7] | Ferns, lycophytes | 2468/3973 | Six chloroplast markers (atpB, rbcL, rps4 gene, rps4-trnS IGS, trnL gene, trnL-trnF IGS) | Penalized likelihood (treePL) | node calibrations 7/26 |
| Schuettpelz and Pryer [4] | Leptosporangiate ferns | 242/400 | Three plastid genes (rbcL, atpA, and atpB; >4000 bp) | Penalized likelihood in r8s version 1.71 | node calibrations 5/24 |
| Pryer et al. [2] | Vascular plants: ferns, lycophytes, seed plants | 6/51 | Four genes (plastid rbcL, atpB, rps4, and nuclear 18S rDNA) | Penalized likelihood in r8s version 1.60 | node calibrations 1/21 |
| Schneider et al. [3] | Ferns, seed plants | 19/42 | Two plastid genes (rbcL, rps4) | Penalized likelihood in r8s version 1.60 | node calibrations 2/14 |
| This study | Eupolypods | 214/218 | Three plastid genes (rbcL, atpA, and atpB; 3841 bp) | Bayesian Inference (MrBayes version 3.2.7a) | Tip calibrations 9/9 |