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Bonitasaura salgadoi

Reptilia - Titanosauridae

Taxonomy
Bonitasaura salgadoi was named by Apesteguía (2004). Its type specimen is MPCA 200. Its type locality is La Bonita Hill quarry, which is in a Santonian fluvial sandstone in the Bajo de la Carpa Formation of Argentina. It is the type species of Bonitasaura.

Synonymy list
YearName and author
2004Bonitasaura salgadoi Apesteguía pp. 493-494 figs. 1-2
2005Bonitasaura salgadoi Avilla et al. p. 43
2006Bonitasaura salgadoi Candeiro et al. p. 934
2008Bonitasaura salgadoi Filippi and Garrido p. 587
2010Bonitasaura salgadoi García and Cerda p. 47
2011Bonitasaura salgadoi Gallina p. 235
2011Bonitasaura salgadoi Gallina and Apesteguía
2012Bonitasaura salgadoi Candeiro and Harris p. 74
2012Bonitasaura salgadoi Díez Díaz et al. p. 266
2012Bonitasaura salgadoi Mannion and Otero p. 634
2013Bonitasaura salgadoi Tschopp and Mateus p. 880
2015Bonitasaura salgadoi Gallina and Apesteguía p. 2

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
RankNameAuthor
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Eusaurischia
Sauropodomorpha(Huene 1932)
Massopoda
Sauropodiformes
Sauropoda()
Eusauropoda
Neosauropoda
Macronaria
Titanosauriformes
Somphospondyli
Titanosauria
familyTitanosauridae
EutitanosauriaSanz et al. 1999
genusBonitasaura
speciessalgadoi

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
S. Apesteguía 2004Bonitasaura differs from other titanosaurs in the following combination of features: dentary alveoli reduced in number (three in the main ramus, one in the angle, and up to seven in the anterior region); middle and posterior region of the dentary edentulous and forming a sharp dorsal edge, with a profusely vascularized lateral side; very robust, diagonal neural arch pillars and bulging neural spine summits on anterior dorsal vertebrae. More diagnostic characters might emerge once all of the postcranial material has been prepared.
P. A. Gallina and S. Apesteguía 2011Bonitasaura salgadoi differs from other titanosaurians in possessing the following unique combination of features: frontal outer rim straight (not sigmoid); thin and enlarged maxillary process of the lacrimal oriented downward and forward; posterior region of the dentary edentulous and bearing a sharp dorsal edge, with a profusely vascularized lateral surface; tongue−like process on spinoprezygapophyseal laminae of mid−cervical vertebrae; very robust, diagonal neural arch pillars and bulging neural spine summits on anterior dorsal vertebrae; longitudinal, paired fossae on the sides of the prespinal lamina in anterior dorsal vertebrae; circular, vertically oriented fossae aligned with the prespinal lamina in mid−dorsal vertebrae; thin, longitudinal laminae diverging from prespinal and postspinal laminae in anterior caudal vertebrae; anterior, longitudinal ridge of the tibia with marked promontory just over the anterior process of distal end
P. A. Gallina and S. Apesteguía 2015Bonitasaura salgadoi differs from other titanosaurs in possessing the following unique combination of features (autapomorphies marked with an asterisk): frontal outer rim straight (not sigmoid); thin and enlarged maxillary process of lacrimal oriented downward and forward (*); posterior dentary edentulous, with sharp dorsal edge, and highly vascularized lateral surface (*); ventral longitudinal keel in posterior half of axial centrum (*); tongue-like process on spinoprezygapophyseal laminae of mid-cervical vertebrae (*); very robust, diagonal neu- ral arch pillars and bulging neural spine summits on anterior dorsal vertebrae; longitudinal, paired fossae on sides of anterior median lamina in anterior dorsal vertebrae; circular, vertically oriented fossae aligned with anterior median lamina in mid-dorsal vertebrae (*); thin, longitudinal laminae diverging from anterior median lamina and postspinal laminae in anterior caudal vertebrae (*); anterior, longitudinal ridge of the tibia with marked promontory just over anterior process of distal end (*).