| Time interval |
Ma |
Country or state |
Original ID and collection number |
| Ashgill - Wenlock | 449.5 - 426.7 | Canada (Nunavut)
| Pseudooneotodus bicornis (188135 188136) |
| Llandovery | 443.1 - 432.9 | USA (Iowa)
| Pseudooneotodus bicornis (178709) |
| Aeronian - Telychian | 440.5 - 432.9 | Greenland
| Pseudooneotodus bicornis (183221) |
| Telychian | 438.6 - 432.9 | Estonia
| Pseudooneotodus bicornis (183417 183424 183426) |
| Telychian | 438.6 - 432.9 | Greenland
| Pseudooneotodus bicornis (182440) |
| Sheinwoodian | 432.9 - 430.6 | Estonia
| Pseudooneotodus bicornis (163606 163607 163608 163609 163610 163611 183428 183429 183430 183431 183432 183435 183436 183437 183438 183439 183440 183441 183442 183443 183446 183450 183479 183480 183481 183482 183483 183484 183488 183490) |
| Sheinwoodian | 432.9 - 430.6 | United Kingdom
| Pseudooneotodus bicornis (182364 182365 182367) |
| Sheinwoodian | 432.9 - 430.6 | Italy (Sardinia)
| Pseudooneotodus bicornis (177776) |
| Sheinwoodian | 432.9 - 430.6 | Canada (Cornwallis Island)
| Pseudooneotodus bicornis (211120) |
| Sheinwoodian | 432.9 - 430.6 | Italy
| Pseudooneotodus bicornis (177896 177898 177900 177901 177902 177903 178387) |
| Sheinwoodian | 432.9 - 430.6 | Canada (Nunavut)
| Pseudooneotodus bicornis (211233 211237) |
| Sheinwoodian | 432.9 - 430.6 | USA (Ohio)
| Pseudooneotodus bicornis (1140 1147 1150 1170 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185) |
| Sheinwoodian - Homerian | 432.9 - 426.7 | Italy (Sardinia)
| Pseudooneotodus bicornis (177780) |
| Wenlock | 432.9 - 426.7 | Austria
| Pseudooneotodus bicornis (187802 187805 187806) |
| Wenlock | 432.9 - 426.7 | Australia (New South Wales)
| Pseudooneotodus bicornis (187232 187234 187235 187237 187238 187251 187252) |
| Wenlock | 432.9 - 426.7 | Canada (Ontario)
| Pseudooneotodus bicornis (746 747 748 749 750 751 752) |
| Wenlock | 432.9 - 426.7 | United Kingdom
| Pseudooneotodus bicornis (193169 193170 193171 193172 193180) |
| Wenlock | 432.9 - 426.7 | USA (New York)
| Panderodus bicornis (776) Pseudooneotodus bicornis (768 769 771 772 773 775 779 780 781 782 783) |
| Wenlock | 432.9 - 426.7 | USA (Tennessee)
| Pseudooneotodus bicornis (164035 164037 164038 164039 164040 164042 164043 164045 164046 164048 164049 164053 164054 164056 164057 164058 164060 164061 164062 164063 164064 164065 164066 164067 164068 164069 164070 164072 164073 164074 164075 164081 164082 164083 164084 164085 164086 164112 164113 164114 164115 164116 164123 164124 164125 164126 164127 164128 164129 164130 164131 164132 164133 164134 164135 164136 164138 164140) |
| Wenlock | 432.9 - 426.7 | Poland
| Pseudooneotodus bicornis (163620 163621 163622) |
| Wenlock - Ludlow | 432.9 - 422.7 | Italy (Sardinia)
| Pseudooneotodus bicornis (26158) |
| Wenlock - Ludlow | 432.9 - 422.7 | USA (Tennessee)
| Pseudooneotodus bicornis (164143) |
| Homerian | 430.6 - 426.7 | Lithuania
| Pseudooneotodus bicornis (163627 163630 179992 179993 179996 179997 179999 180060 180063 180064 180065 180066 180068 180070 180071 180072 180075 180076 180077 180079 180081) |
| Homerian | 430.6 - 426.7 | Italy (Sardinia)
| Pseudooneotodus bicornis (177777) |
| Homerian | 430.6 - 426.7 | Greenland
| Pseudooneotodus bicornis (183238 183239) |
| Homerian | 430.6 - 426.7 | Estonia
| Pseudooneotodus bicornis (163598 163600 163604) |
| Homerian | 430.6 - 426.7 | Italy
| Pseudooneotodus bicornis (177689 177853 177854 177855 177856 178248) |
| Homerian | 430.6 - 426.7 | USA (Wisconsin)
| Pseudooneotodus bicornis (180168 180169 180170 180171) |
| Homerian | 430.6 - 426.7 | USA (Oklahoma)
| Pseudooneotodus bicornis (180172 180173 180174 180175 180176 180177 180178 180179 180180 180181) |
| Homerian | 430.6 - 426.7 | USA (Tennessee)
| Pseudooneotodus bicornis (164018 164019 164020 164022 164023 164024 164025 164079 164087 164088 164089 164091 164092 164095 164096 164105 164109 164117 164118 164119 164120) |
| Homerian | 430.6 - 426.7 | Canada (Nunavut)
| Pseudooneotodus bicornis (211771 211773 211777) |
| Homerian | 430.6 - 426.7 | USA (Texas)
| Pseudooneotodus bicornis (180276 180277 180278 180279 180280 180281 180282 180286 180287 180288 180289 180290 180291 180292 180293 180294) |
| Homerian | 430.6 - 426.7 | Poland
| Pseudooneotodus bicornis (163678) |
| Homerian | 430.6 - 426.7 | Sweden (Gotland)
| Pseudooneotodus bicornis (163538 163540 163541 163542 163543 163545) |
| Homerian - Gorstian | 430.6 - 425.0 | USA (Tennessee)
| Pseudooneotodus bicornis (164098 164099 164100 164101 164102 164103 164104) |
| Gorstian | 426.7 - 425.0 | Sweden (Gotland)
| Pseudooneotodus bicornis (184984) |
| Gorstian | 426.7 - 425.0 | Italy
| Pseudooneotodus bicornis (177897 177899) |
| Ludfordian | 425.0 - 422.7 | Italy
| Pseudooneotodus bicornis (177819 177820 177821 177823 177824 177825 177826 177863 177864 177865 177867 177868 177869 177870 177872 177906 177907 177908 177909 177910 177911 177912 177913 177914 177915) |
| Ludfordian | 425.0 - 422.7 | Czech Republic
| Pseudooneotodus bicornis (179153 179154 179157 179158 179159 179160 179161 179162 179166 179167 179168 179169 179172) |
| Ludfordian - Pridoli | 425.0 - 419.62 | Sweden (Gotland)
| Pseudooneotodus bicornis (200162 200163) |
| Pridoli | 422.7 - 419.62 | Italy (Sardinia)
| Pseudooneotodus bicornis (26183) |
| Pridoli | 422.7 - 419.62 | Italy
| Pseudooneotodus bicornis (177789 177791 177792 177793 177794 177804 177830 177894) |