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Baenidae

Reptilia - Testudines - Baenidae

Synonyms
Synonymy list
YearName and author
1882Baenidae Cope
1908Baenidae Hay p. 56
1915Baena platyplastra Gilmore p. 120 figs. 2; 8
1928Baeninae Nopcsa p. 165
1935Thescelus hemispherica Gilmore p. 174 figs. 11-12, Pl. 16
1946Baenidae Kuhn p. 58
1958Baenidae Delair p. 51
1964Baenidae Estes p. 96
1966Baenidae Kuhn p. 24
1970Baenidae Estes and Berberian p. 5
1972Baenidae Gaffney pp. 248, 251-252
1972Baeninae Gaffney pp. 248, 274-276
1975Baenidae Gaffney p. 427
1988Baenidae Carroll
2001Baenidae Peng et al. p. 23
2002Baenidae Holroyd and Hutchison p. 181
2002Baeninae Holroyd and Hutchison p. 181
2003Baenidae Brinkman
2003Baenidae Hutchison and Holroyd
2004Baenidae Hutchison
2004Baeninae Hutchison
2004Baenidae Joyce et al.
2007Baenidae Joyce
2010Baenidae Lyson and Joyce
2011Baenidae Lyson and Joyce p. 792
2011Baenidae Pérez-García and Ortega
2012Baenidae Anquetin p. 28 fig. 10
2012Baenidae Pérez-García
2012Baenidae Sullivan et al.
2012Thescelus hemispherica Sullivan et al.
2013Baenidae Brinkman
2013Baenidae Hutchison et al.
2013Baenidae Pérez-García and Murelaga
2015Baenidae Joyce and Lyson
2015Baenidae Lively
2015Baenidae Pérez-García et al.
2016Baenidae Lively
2019Baenidae Joyce and Anquetin
2019Baenidae Lyson et al.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
RankNameAuthor
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
Testudinata(Oppel 1811)
orderTestudinesBatsch 1788
Paracryptodira
familyBaenidaeCope 1882
familyBaenidaeCope 1882

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.

Diagnosis
ReferenceDiagnosis
O. P. Hay 1908Amphichelydia having the plastron firmly joined to the carapace by sutural union with the lateral peripherals and with the costals by strongly developt axillary and inguinal buttresses. Mesoplastra usually meeting at the midline and expanding toward the outer ends. Skulls, so far as known, broad and short. Temporal roof extensive. Neck short, most of the vertebral centra with only one end concave.
E. S. Gaffney 1972Baenids with wedge-shaped skull in dorsal view; temporal emargination reduced; nasal not expanded laterally; prefrontals with little dorsal exposure; squamosal-parietal conratojugal not C-shaped, lacking dorsal process; jugal widely exposed in orbital margin; triturating surfaces essentially as in Plesiobaena with slight variations; orbits opening laterally; cervical vertebrae with formed central articulations; shell oval but usually pointed anteriorly; ornamentation highly varied; cervical (nuchal) scute small, sometimes double; anterior of carapace without emargination; first vertebral scute variable; supramarginal scutes absent; xiphiplastral notch absent; paired intergulars usually present; intergulars usually meeting in midline, but sometimes varying considerably; last vertebral scute opening on edge of carapace; posterior edge of carapace usually scalloped, usually emarginated to some extent.
T. R. Lyson and W. G. Joyce 2011‘‘Baenidae’’ refers to the most inclusive clade containing Baena arenosa Leidy, 1870 but not Pleurosternon (orig. Platemys) bullockii Owen, 1842 or any species of Recent turtle.

Lingual ridge developed anteriorly only; deep temporal emargination (i.e., no parietal/squamosal contact) present; parietal overhang on top of supraoccipital and epiplastral processes absent, strongly developed axillary buttress present that extends onto costals; strongly developed inguinal buttress.
T. R. Lyson et al. 2019Saxochelys gilberti is diagnosed as a member of Paracryptodira based on foramen posterior canalis carotici interni (sensu Rollot et al., 2018) located halfway between the suture of the basisphenoid and the pterygoid, absence of the interpterygoid vacuity, and the distinct thickening of the plastron medial to the inguinal buttresses.