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Bairdemys
Taxonomy
Bairdemys was named by Gaffney and Wood (2002).
It was assigned to Pelomedusoides by Sanchez-Villagra and Scheyer (2010); to Bairdemydita by Gaffney et al. (2011); to Podocnemidae by Cadena et al. (2012); to Stereogenyina by Ferreira et al. (2015); and to Podocnemididae by Gaffney and Wood (2002), Riff et al. (2010), de la Fuente et al. (2014) and Weems (2023).
It was assigned to Pelomedusoides by Sanchez-Villagra and Scheyer (2010); to Bairdemydita by Gaffney et al. (2011); to Podocnemidae by Cadena et al. (2012); to Stereogenyina by Ferreira et al. (2015); and to Podocnemididae by Gaffney and Wood (2002), Riff et al. (2010), de la Fuente et al. (2014) and Weems (2023).
Synonymy list
| Year | Name and author |
|---|---|
| 2002 | Bairdemys Gaffney and Wood p. 2 |
| 2010 | Bairdemys Riff et al. |
| 2010 | Bairdemys Sanchez-Villagra and Scheyer |
| 2011 | Bairdemys Gaffney et al. |
| 2012 | Bairdemys Cadena et al. p. 290 |
| 2014 | Bairdemys de la Fuente et al. |
| 2015 | Bairdemys Ferreira et al. |
| 2023 | Bairdemys Weems |
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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. †Bairdemys Gaffney and Wood 2002
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†Bairdemys hartsteini Gaffney and Wood 2002
†Bairdemys healeyorum Weems and Knight 2013
†Bairdemys miocenica Collins and Lynn 1936
†Bairdemys sanchezi Gaffney et al. 2008
†Bairdemys thalassica Ferreira et al. 2015
†Bairdemys venezuelensis Wood and Diaz 1971
†Bairdemys winklerae Gaffney et al. 2008
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. A. Cadena et al. 2012 | A ‘‘Shweboemys Group’’ Pelomedusoides turtle (sensu Meylan 1996) known from skull, jaw, shell, and some girdle and limb elements; secondary palate shorter than in all ‘‘Shweboemys Group’’ except ‘‘Shweboemys’’ gaffneyi (per Gaffney and Wood 2002); medial edges of palatal cleft curved as in ‘‘Shweboemys’’ gaffneyi; ventral convexity on triturating surface larger than in all other ‘‘Shweboemys Group’’; eustachian tube separated by bone from rest of fenestra postotica in contrast to all other known Podocnemididae; antrum postoticum extremely small and slit-like in contrast to all other ‘‘Shweboemys Group’’; frontal and prefrontal strongly convex on dorsal surface in contrast to all other ‘‘Shweboemys Group’’; basisphenoid separated from palatines by medially meeting pterygoids as in ‘‘Shweboemys’’ antiqua (per Gaffney and Wood 2002) and S. pilgrimi; basioccipital longer than in Shweboemys pilgrimi; jugal-pterygoid contact prevents palatine-parietal contact. Intergular, gular, and humeral scutes greatly reduced and restricted to the far anterior plastron, pectoral | |
| G. S. Ferreira et al. 2015 | Podocnemidids with a unique secondary palate among turtles, which is formed by maxillae and palatines and separated on the midline by a narrow cleft; no median maxillary ridge seen in other Podocnemididae; palate with a variable development of the rostral convexity and caudal concavity; palatine making up half or more of secondary palate; fossa orbitalis with extensive caudal pocket behind orbital rim enclosed by the septum orbitotemporale. |
Measurements
No measurements are available
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| Source: f = family, c = class, subp = subphylum | |||||
| References: Uetz 2005, Hendy et al. 2009, Carroll 1988 | |||||
Collections (14 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Chattian | USA (South Carolina) | B. healeyorum (60443) | |
| Burdigalian | USA (Puerto Rico) | B. hartsteini (56978) | |
| Burdigalian | Venezuela (Lara) | Bairdemys indet. (145379) | |
| Burdigalian | Venezuela (Falcon) | Podocnemis venezuelensis (43063) | |
| Burdigalian | USA (Maryland) | Taphrosphys miocenica (71796) | |
| Langhian | USA (Maryland) | B. miocenica (70818) | |
| Middle Miocene | USA (North Carolina) | B. miocenica (151550) | |
| Middle Miocene | Venezuela (Falcon) | B. thalassica (191413) | |
| Tortonian | Panama | B. sp. (187583) | |
| Late/Upper Miocene | Venezuela (Falcon) | B. sanchezi (136776) B. venezuelensis (147464) B. winklerae (143319) | |
| Late/Upper Miocene | Venezuela (Falcón) | Podocnemis venezuelensis (183009) | |
| Late/Upper Miocene | Venezuela | B. venezuelensis (92751) |