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Opisthotriton
Taxonomy
Opisthotriton was named by Auffenberg (1961).
It was assigned to Salamandridae by Auffenberg (1961); to Desmognathinae by Estes (1964); to Batrachosauridae by Peng et al. (2001); and to Batrachosauroididae by Estes (1969), Estes and Berberian (1970), Estes (1976), Naylor (1979), Estes (1981), Carroll (1988), Bryant (1989), Sullivan (1991) and DeMar (2013).
It was assigned to Salamandridae by Auffenberg (1961); to Desmognathinae by Estes (1964); to Batrachosauridae by Peng et al. (2001); and to Batrachosauroididae by Estes (1969), Estes and Berberian (1970), Estes (1976), Naylor (1979), Estes (1981), Carroll (1988), Bryant (1989), Sullivan (1991) and DeMar (2013).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1961 | Opisthotriton Auffenberg p. 458 |
| 1964 | Opisthotriton Estes p. 81 |
| 1969 | Opisthotriton Estes p. 231 |
| 1970 | Opisthotriton Estes and Berberian p. 4 |
| 1976 | Opisthotriton Estes p. 505 |
| 1979 | Opisthotriton Naylor p. 19 |
| 1981 | Opisthotriton Estes |
| 1988 | Opisthotriton Carroll |
| 1989 | Opisthotriton Bryant p. 31 |
| 1991 | Opisthotriton Sullivan p. 294 |
| 2001 | Opisthotriton Peng et al. p. 19 |
| 2013 | Opisthotriton DeMar, Jr. |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Opisthotriton Auffenberg 1961
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†Opisthotriton gidleyi Sullivan 1991
†Opisthotriton kayi Auffenberg 1961
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: subo = suborder, c = class, subp = subphylum, uc = unranked clade | |||||
| References: Carroll 1988, Hendy et al. 2009, Uhen 2004 | |||||
Age range: base of the Late/Upper Santonian to the top of the Clarkforkian or 85.80000 to 54.90000 Ma
Collections (136 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Santonian | USA (Utah) | O. sp. (181388 181390) | |
| Judithian | USA (Utah) | O. sp. (14467) | |
| Judithian | Canada (Alberta) | O. kayi (14463) | |
| Late/Upper Campanian | Canada (Alberta) | O. kayi (22695 22696 22697 22698 34302 34303 34305 34307 34309 34310 34315 34319 34320 34321 34322 45238 45260 45261 45262 45264 45671 45674 45822 45892 45893 45897 45898 45899 47784 47793 47807 47811 47812 47814 47816) O. sp. (98674 98677) | |
| Late/Upper Campanian | USA (New Mexico) | O. kayi (14498 36543) | |
| Late/Upper Campanian | USA (Utah) | O. sp. (75836 75846 75849) | |
| Middle Campanian | Canada (Alberta) | O. kayi (45240 45560 45561 45564 45565 45566 45567 45670 45820 47794 47795 47809) | |
| Middle Campanian | USA (Utah) | O. sp. (190353) | |
| Middle Campanian - Late/Upper Campanian | USA (Montana) | O. kayi (23549) O. sp. (14490) | |
| Middle Campanian - Late/Upper Campanian | Canada (Saskatchewan) | O. kayi (229975) O. sp. (14494) | |
| Middle Campanian - Late/Upper Campanian | Canada (Alberta) | O. kayi (45819 45821 45894) | |
| Late/Upper Campanian - Early/Lower Maastrichtian | Canada (Alberta) | O. sp. (34744) | |
| Maastrichtian | USA (North Dakota) | O. kayi (45113 231469) | |
| Maastrichtian | USA (Montana) | O. kayi (85498 85499) | |
| Early/Lower Maastrichtian | Canada (Alberta) | O. sp. (14502 135739 135741 135743) | |
| Lancian | USA (North Dakota) | O. kayi (14610) | |
| Lancian | USA (South Dakota) | O. kayi (14537 192251) | |
| Lancian | USA (Wyoming) | O. kayi (14505 14514 14519 14538 14557 14566 14577 14601) | |
| Lancian | Canada (Saskatchewan) | O. kayi (14655) | |
| Lancian | USA (Colorado) | O. kayi (14640) | |
| Lancian | USA (Montana) | O. kayi (14515 14534 14535 14546 14549 14582 14639 144499 144502) O. sp. (14508 14560 14574) | |
| Late/Upper Maastrichtian | Canada (Saskatchewan) | O. sp. (54105) | |
| Late/Upper Maastrichtian | USA (North Dakota) | O. kayi (45098 45109 45111 45112 45118 45136 45144 213589) | |
| Late/Upper Maastrichtian | USA (South Dakota) | O. sp. (157189 224484) | |
| Late/Upper Maastrichtian | USA (Wyoming) | O. kayi (14585) | |
| Late/Upper Maastrichtian | USA (Montana) | O. kayi (13142) | |
| Pu3 | USA (Montana) | O. kayi (218647) | |
| Puercan | USA (Montana) | O. kayi (14666 14766 14798) | |
| Puercan | Canada (Saskatchewan) | O. kayi (14768) | |
| Puercan | USA (North Dakota) | O. kayi (141585) | |
| Puercan | Canada (Alberta) | O. kayi (192237) | |
| Puercan | USA (Colorado) | O. kayi (14658 14792) | |
| Danian | USA (North Dakota) | O. sp. (14962) | |
| Torrejonian | USA (Wyoming) | O. kayi (14886 14912) | |
| Torrejonian | USA (Texas) | O. kayi (14887) | |
| Torrejonian | Canada (Alberta) | O. kayi (14828) | |
| Torrejonian | USA (Montana) | O. kayi (14874) O. kayi, O. gidleyi (14906) | |
| Ti3 | Canada (Alberta) | O. sp. (14992) | |
| Ti4 | Canada (Saskatchewan) | O. kayi (14978) | |
| Tiffanian | USA (North Dakota) | O. sp. (14931) | |
| Tiffanian | USA (Wyoming) | O. kayi (15049 53059) | |
| Clarkforkian | USA (Montana) | O. sp. (15079) | |
| Clarkforkian | USA (Wyoming) | O. kayi (15082) |