| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Stirtonhyus xiphodonticus
Taxonomy
Prosthennops xiphodonticus was named by Barbour (1925) [also said to be 1924]. Its type locality is Valentine Railway Quarries, which is in a Barstovian terrestrial horizon in the Valentine Formation of Nebraska. It is the type species of Stirtonhyus.
It was recombined as Dyseohyus xiphodonticus by Voorhies (1990); it was recombined as Stirtonhyus xiphodonticus by Prothero (2021).
It was recombined as Dyseohyus xiphodonticus by Voorhies (1990); it was recombined as Stirtonhyus xiphodonticus by Prothero (2021).
Synonyms
|
Synonymy list
| Year | Name and author |
|---|---|
| 1925 | Prosthennops xiphodonticus Barbour |
| 1969 | Dyseohyus stirtoni Woodburne p. 325 figs. 3-4; Pl. 48-51 |
| 1983 | Prosthennops xiphodonticus Wright |
| 1990 | Dyseohyus xiphodonticus Voorhies |
| 1993 | Prosthennops xiphodonticus Wright |
| 1998 | Prosthennops xiphodonticus Wright |
| 2017 | Prosthennops xiphodonticus Dutra et al. p. 353 |
| 2021 | Stirtonhyus xiphodonticus Prothero p. 23 |
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.
†Stirtonhyus xiphodonticus Barbour 1925
show all | hide all
Invalid names: Dyseohyus stirtoni Woodburne 1969 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. O. Woodburne 1969 (Dyseohyus stirtoni) | Differing from D. fricki in the following ways: dorsal surface of nasals transversely convex; posterior palatine foramina opposite anterior half or posterior half of M1; palate extending posteriorly nearly to level of glenoid fossa, parametacone of P4 relatively well separated; molars relatively elongate and narrow, M3 elongate; dP3 and dP4 larger than in D. fricki; dP4 regularly rectangular; P4 large, relatively robust; lower molars relatively elongate; no genial spine on posterior surface of symphysis; ventral surface of symphysis concave below canines. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|||||
|
|
||||
| Source: f = family, o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Nowak 1991, Lillegraven 1979, Hendy et al. 2009, Nowak 1999, Carroll 1988 | |||||
Age range: base of the Barstovian to the top of the Langhian or 16.30000 to 13.82000 Ma
Collections (23 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Miocene | USA (Maryland) | Cynorca proterva (18517) | |
| Miocene | Mexico (Aguascalientes) | Dyseohyus stirtoni (18756) | |
| Burdigalian - Langhian | USA (Maryland) | Prosthennops xiphodonticus (18518) | |
| Hemingfordian | USA (Nebraska) | Cynorca proterva (17987) Dyseohyus stirtoni (17999) | |
| Barstovian | USA (Nebraska) | Dyseohyus xiphodonticus (18164 18192 18206 18208 18209 18248 18261 18275 18284 type locality: 18442) Prosthennops sp. (18165 18443) | |
| Early/Lower Barstovian | USA (Nebraska) | Dyseohyus stirtoni (17905 17956 17976 17985) | |
| Early/Lower Barstovian | USA (Texas) | Dyseohyus stirtoni, Cynorca proterva (18665) | |
| Langhian | USA (Maryland) | Cynorca proterva (18516) |