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Pleurosternidae

Reptilia - Testudines - Pleurosternidae

Synonymy list
YearName and author
1868Pleurosternidae Cope
1871Pleurosternidae Cope p. 236
1875Pleurosternidae Cope p. 17
1889Pleurosternidae Lydekker p. 205
1902Pleurosternidae Hay p. 437
1908Pleurosternidae Hay p. 45
1946Pleurosternidae Kuhn p. 58
1958Pleurosternidae Delair p. 47
1966Pleurosternidae Kuhn p. 22
1988Pleurosternidae Carroll
1999Pleurosternidae Goodwin et al. p. 734
2002Pleurosternidae Holroyd and Hutchison p. 181
2003Pleurosternidae Hutchison and Holroyd
2004Pleurosternidae Joyce et al.
2004Pleurosternidae Milner p. 1445
2007Pleurosternidae Joyce
2011Pleurosternidae Lyson and Joyce p. 792
2011Pleurosternidae Pérez-García and Ortega
2012Pleurosternidae Anquetin p. 28 fig. 10
2012Pleurosternidae Karl et al.
2012Pleurosternidae Sullivan et al.
2013Pleurosternidae Hutchison et al.
2013Pleurosternidae Pérez-García and Murelaga
2015Pleurosternidae Pérez-García et al.
2015Pleurosternidae Pérez-García et al.
2019Pleurosternidae Joyce and Anquetin

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

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 1908A family of Amphichelydia. Carapace with costals articulated to the peripherals by close sutures and by gomphosis of ends of ribs. Plastron joined to the carapace by sutures and by narrow axillary and inguinal buttresses; the former ascending to the first costal, the latter attaining the borders of the fifth and sixth costals at their junction. In Helochelys the union of carapace and plastron probably less intimate. Mesoplastrals meeting broadly at the midline, not much expanded toward the outer ends. Exposed surfaces of carapace and plastron tuberculated or shagreened. Intergulars and inframarginals present. Skull elongated and pointed; the bones mostly finely tuberculated. The cervical vertebrae are biconcave. Coracoids
distally expanded.
A. R. Milner 2004Primitive cryptodires sharing one synapomorphy, namely pterygoids separated by anteriorly elongate basisphenoid
T. R. Lyson and W. G. Joyce 2011‘‘Pleurosternidae’’ refers to the most inclusive clade containing Pleurosternon (orig. Platemys) bullockii Owen, 1842 but not Baena arenosa Leidy, 1870 or any species of Recent turtle.

Oblong skull shape (length is significantly greater than maximum width); rectangular basisphenoid; anterior plastral lobe larger than posterior plastral lobe.