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Triproetus
Taxonomy
Neoproetus (Triproetus) was named by Kobayashi and Hamada (1979) [Sepkoski's age data: C Step P Leon-l].
It was reranked as Triproetus by Brezinski (1992), Jell and Adrain (2002), Sepkoski (2002), Owens (2003), Fortey and Heward (2015), Brezinski (2025).
It was assigned to Neoproetus by Kobayashi and Hamada (1979); to Proetida by Sepkoski (2002); to Proetidae by Brezinski (1992), Jell and Adrain (2002), Fortey and Heward (2015); and to Ditomopyginae by Owens (2003), Brezinski (2025).
It was reranked as Triproetus by Brezinski (1992), Jell and Adrain (2002), Sepkoski (2002), Owens (2003), Fortey and Heward (2015), Brezinski (2025).
It was assigned to Neoproetus by Kobayashi and Hamada (1979); to Proetida by Sepkoski (2002); to Proetidae by Brezinski (1992), Jell and Adrain (2002), Fortey and Heward (2015); and to Ditomopyginae by Owens (2003), Brezinski (2025).
Subtaxa
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1979 | Neoproetus (Triproetus) Kobayashi and Hamada p. 10 |
| 1992 | Triproetus Brezinski p. 930 |
| 2002 | Triproetus Jell and Adrain p. 455 |
| 2002 | Triproetus Sepkoski |
| 2003 | Triproetus Owens p. 382 |
| 2015 | Triproetus Fortey and Heward p. 214 |
| 2025 | Triproetus Brezinski p. 170 |
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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. †Triproetus Kobayashi and Hamada 1979
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†Triproetus altasulcus Brezinski 1992
†Triproetus angustus Brezinski 1992
†Triproetus bonbon Fortey and Heward 2015
†Triproetus borealis Kobayashi 1987
†Triproetus spitsbergensis Osmólska 1968
†Triproetus subovalis Kobayashi and Hamada 1979
†Triproetus tumidus Brezinski 1992
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. K. Brezinski 1992 | Glabella pyriform in outline; frontal lobe inflated; anterior border poorly developed or lackin Preoccipital lobes small, slightly swollen; eyes large; facial sutures with very long c to ' section. Pygidium with broad ax and border flanged. |
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Fortey and Owens 1999, Aberhan et al. 2004, Whittington et al. 1997 | |||||
Age range: base of the Asselian to the top of the Wuchiapingian or 298.90000 to 254.14000 Ma
Collections (27 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Asselian | USA (Texas) | T. angustus (43468 43472 43474 43475 75939) | |
| Asselian | Thailand | Neoproetus subovalis (133251) | |
| Asselian | Svalbard and Jan Mayen | Ditomopyge spitsbergensis (116062) | |
| Sakmarian | Canada (Yukon) | Ditomopyge spitsbergensis (116371) | |
| Sakmarian | USA (Texas) | T. altasulcus (102612) | |
| Artinskian | USA (Texas) | T. altasulcus (43544 75931) T. tumidus (43588 102613 102620) T. tumidus, T. altasulcus (43559 102617) | |
| Kungurian | Oman | T. bonbon (166923) | |
| Kungurian | USA (Texas) | T. altasulcus (43558 43586) T. angustus (75864) T. tumidus (43534 102608) | |
| Kungurian - Roadian | Oman | T. bonbon (166924) | |
| Kazanian | Indonesia (Timor) | T. trigonoceps (216428) | |
| Capitanian | Malaysia | Neoproetus subovalis (62915) | |
| Wuchiapingian | Svalbard and Jan Mayen | Neoproetus borealis (51677 94858) |