| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Acheloma
Taxonomy
Acheloma was named by Cope (1882). Its type is Acheloma cumminsi. It is the type genus of Achelomidae. It was considered monophyletic by Polley and Reisz (2011).
It was assigned to Eryopidae by Cope (1882), Cope (1884), Hay (1902), Broili (1913); to Achelomidae by Watson (1919); to Trematopsidae by Dilkes and Reisz (1987), Carroll (1988); to Temnospondyli by Maddin et al. (2012); and to Trematopidae by Anderson et al. (2008), Polley and Reisz (2011), Schoch (2013), Osterling Arias et al. (2024).
It was assigned to Eryopidae by Cope (1882), Cope (1884), Hay (1902), Broili (1913); to Achelomidae by Watson (1919); to Trematopsidae by Dilkes and Reisz (1987), Carroll (1988); to Temnospondyli by Maddin et al. (2012); and to Trematopidae by Anderson et al. (2008), Polley and Reisz (2011), Schoch (2013), Osterling Arias et al. (2024).
Species
A. cryptatheria, A. cumminsi (syn. Trematops milleri, A. dunni) (type species)
Synonyms
|
Synonymy list
| Year | Name and author |
|---|---|
| 1882 | Acheloma Cope pp. 455-456 |
| 1884 | Acheloma Cope p. 33 |
| 1902 | Acheloma Hay p. 423 |
| 1909 | Trematops Williston |
| 1910 | Trematops Williston p. 278 |
| 1913 | Acheloma Broili p. 98 |
| 1919 | Acheloma Watson p. 65 |
| 1919 | Trematops Watson p. 65 |
| 1987 | Acheloma Dilkes and Reisz p. 10 |
| 1988 | Acheloma Carroll |
| 1988 | Trematops Carroll |
| 2008 | Acheloma Anderson et al. p. 72 |
| 2011 | Acheloma Polley and Reisz p. 792 |
| 2012 | Acheloma Maddin et al. |
| 2013 | Acheloma Schoch |
| 2024 | Acheloma Osterling Arias et al. |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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. †Acheloma Cope 1882
show all | hide all
†Acheloma cryptatheria Osterling Arias et al. 2024
†Acheloma cumminsi Cope 1882
hide
Invalid names: Acheloma dunni Polley and Reisz 2011 [synonym], Trematops milleri Williston 1909 [synonym]
Invalid names: Trematops Williston 1909 [objective synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| B. P. Polley and R. R. Reisz 2011 | Large trematopid temnospondyl characterized by the following autapomorphies: toothed, raised crest running anteroposteriorly along the vomer, mesial to the choana; otic notch with a nearly horizontal ventral margin. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|||||
|
|||||
|
|
||||
| Source: subo = suborder, c = class, subp = subphylum, uc = unranked clade | |||||
| References: Hendy et al. 2009, Kiessling 2004, Carroll 1988, Reisz et al. 2009, Uhen 2004 | |||||
Age range: base of the Artinskian to the top of the Kungurian or 290.10000 to 274.40000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Wolfcampian | USA (Texas) | A. cumminsi (79162) | |
| Permian | USA (Oklahoma) | A. sp. (221391 221392) | |
| Artinskian | USA (Texas) | Trematops sp. (22668) | |
| Artinskian | USA (Oklahoma) | A. cumminsi, A. dunni, A. cryptatheria (67862) | |
| Kungurian | USA (Texas) | A. sp. (28256) Trematops milleri (28267) |