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Drepanoistodus
Taxonomy
Drepanoistodus was named by Lindstrom (1971) [Sepkoski's age data: O Trem-u O Ashg-u Sepkoski's reference number: 313]. It is not extant.
It was assigned to Drepanoistodontinae by Stouge (1984); to Drepanoistodontidae by Pyle and Barnes (2002); and to Conodontophorida by Sepkoski (2002).
It was assigned to Drepanoistodontinae by Stouge (1984); to Drepanoistodontidae by Pyle and Barnes (2002); and to Conodontophorida by Sepkoski (2002).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1971 | Drepanoistodus Lindstrom |
| 1984 | Drepanoistodus Stouge p. 59 |
| 2002 | Drepanoistodus Pyle and Barnes p. 61 |
| 2002 | Drepanoistodus Sepkoski |
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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. †Drepanoistodus Lindstrom 1971
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†Drepanoistodus amoenus Lindström 1955
†Drepanoistodus basiovalis Sregeeva 1963
†Drepanoistodus bellburnensis Stouge 1984
†Drepanoistodus costatus Abaimova 1971
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Invalid names: Drepanoistodus cornutiformis Lee 1976 [synonym], Drepanoistodus flexilis An 1981 [synonym], Drepanoistodus ordosensis Wang and Luo 1984 [synonym]
†Drepanoistodus deltifer Lindström 1955
†Drepanoistodus forceps Lindström 1955
†Drepanoistodus latus Pyle and Barnes 2003
†Drepanoistodus pitjanti Cooper 1981
†Drepanoistodus suberectus Branson and Mehl 1933
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Invalid names: Distacodus incurvatus Hinde 1879 [synonym], Oistodus giganteus Stauffer 1936 [synonym]
†Drepanoistodus tablepointensis Stouge 1984
†Drepanoistodus venustus Stauffer 1935
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class | |||||
| Reference: Aberhan 1992 | |||||
Collections (549 total)
Oldest occurrences | |||
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Cambrian | China (Jilin Provence) | Drepanodus suberectus (156926 156927) | |
| Cambrian | Norway (Naersnes) | D. sp. (156964) | |
| Trempealeauan | Canada (Nunuvat) | D. pervetus (203793 203794) | |
| Trempealeauan | Canada (Alberta) | D. pervetus (203784 203785) | |
| Ibexian | USA (New York) | D. concavus (64618) | |
| Ibexian | USA (Nevada) | D. deltifer (91172) | |
| Tremadoc | Iran | D. amoenus (116238) D. nowlani (116232 210343) | |
| Tremadoc | Canada (British Columbia) | D. minutus, D. pervetus (203849) D. minutus, D. pervetus, D. expansus (203831) D. pervetus (203827 203828 203829 203830 203832 203833) D. pervetus, D. expansus (203834) | |
| Tremadoc | China (Hubei) | D. sp. (4727 4730 4731 4732 4733 4735 4737 4738) | |
| Tremadoc | Argentina (Jujuy) | D. chuealeznensis (210703) | |
Youngest occurrences |
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| Time interval | Ma | Country or state | PBDB collection number |
| Gamachian | USA (Missouri) | D. suberectus (177551 177552 177553 177554) | |
| Ashgill - Llandovery | Canada (Québec) | D. suberectus (24505) | |
| Ashgill - Wenlock | Canada (Nunavut) | D. suberectus (188106 188107 188108 188110 188111 188112 188117 188118 188163 188165 188167 188187 188188 188189 188192 188193 188194 188195 188199) | |
| Cautleyan | Ireland (Leinster) | D. suberectus (89130) | |
| Porkuni | Sweden (southern Gotland) | D. suberectus (183653) | |
| Hirnantian | Germany | D. sp. (210975) | |
| Hirnantian | Sweden | D. suberectus (159341) | |
| Silurian | Malaysia | Drepanodus suberectus (181687) | |
| Alexandrian - Niagaran | Canada (Québec) | Drepanodus suberectus (25033) | |
| Aeronian | Canada (Québec) | Drepanodus suberectus (25030) | |