| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Hydromedusa
Taxonomy
Hydromedusa was named by Wagler (1830). It is extant.
It was assigned to Hydromedusinae by van Dijk et al. (2014); to Chelidae by Maniel and de la Fuente (2016); and to Chelidae by Carroll (1988), Frank and Ramus (1996), de la Fuente and Bona (2002), Gaffney et al. (2006), de la Fuente et al. (2014) and Maniel et al. (2018).
It was assigned to Hydromedusinae by van Dijk et al. (2014); to Chelidae by Maniel and de la Fuente (2016); and to Chelidae by Carroll (1988), Frank and Ramus (1996), de la Fuente and Bona (2002), Gaffney et al. (2006), de la Fuente et al. (2014) and Maniel et al. (2018).
Synonymy list
| Year | Name and author |
|---|---|
| 1830 | Hydromedusa Wagler |
| 1988 | Hydromedusa Carroll |
| 1996 | Hydromedusa Frank and Ramus |
| 2002 | Hydromedusa de la Fuente and Bona p. 78 |
| 2006 | Hydromedusa Gaffney et al. p. 33 |
| 2014 | Hydromedusa de la Fuente et al. |
| 2014 | Hydromedusa van Dijk et al. |
| 2016 | Hydromedusa Maniel and de la Fuente |
| 2018 | Hydromedusa Maniel 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. Hydromedusa Wagler 1830
show all | hide all
†Hydromedusa casamayorensis de la Fuente and Bona 2002
Hydromedusa maximiliani Mikan 1820 [Brazilian snakeneck turtle]
Hydromedusa tectifera Cope 1869 [Argentine snake-necked turtle]
hide
Invalid names: Platemys antiqua Ameghino 1882 [synonym], Platemys fossilis Ameghino 1882 [synonym], Platemys laevis Ameghino 1882 [synonym], Platemys robusta Ameghino 1882 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| I. J. Maniel et al. 2018 | It is referred to the clade Chelidae by the loss of the mesoplastral bone in the plastron. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|||||
|
|
||||
|
|
||||
| Source: f = family, c = class, subp = subphylum | |||||
| References: Ernst and Barbour 1989, Hendy et al. 2009, Carroll 1988 | |||||
Age range
Maximum range based only on fossils: base of the Danian to the top of the Late/Upper Pleistocene or 66.00000 to 0.01170 Ma
Minimum age of oldest fossil (stem group age): 61.6 Ma
Minimum age of oldest fossil (stem group age): 61.6 Ma
Collections (14 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Danian | Argentina (Chubut) | H. casamayorensis (95914) | |
| Lutetian | Argentina (Chubut) | H. casamayorensis (208470 208471 208472 208483 208488) | |
| Middle Eocene | Argentina (Chubut) | H. casamayorensis (142920 142929 193010) H. sp. (187591) | |
| Montehermosan | Argentina (Buenos Aires) | H. tectifera (140635) | |
| Pleistocene | Argentina (Buenos Aires) | Platemys antiqua, Platemys fossilis, Platemys laevis, Platemys robusta (191141) | |
| Middle Pleistocene | Argentina (Buenos Aires) | H. tectifera (63335) | |
| Late/Upper Pleistocene | Argentina (Buenos Aires) | H. tectifera (71316) |