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Majungasaurus crenatissimus

Reptilia - Abelisauridae

Taxonomy
Megalosaurus crenatissimus was named by Depéret (1896) [original types FSL 92.289, 92.290, 92.306, 92.343 set aside as per ICZN Opinion 2269.]. Its type specimen is MNHN.MAJ 1, a mandible, and it is a 3D body fossil. Its type locality is Mevarana site 2, which is in a Maastrichtian fluvial-lacustrine sandstone in the Maevarano Formation of Madagascar.

It was recombined as Dryptosaurus crenatissimus by Depéret and Savornin (1928); it was considered a nomen dubium by Sampson et al. (1998); it was recombined as Majungasaurus crenatissimus by Lavocat (1955), Lapparent (1957), Steel (1970), Russell et al. (1976), Obata and Kanie (1977), Taquet (1984), Bonaparte (1991), Krause and Dodson (1994), Sampson et al. (1996), Sampson et al. (1996), Currie and Padian (1997), Rowe et al. (1997), Novas (1997), Prasad and Sahni (1999), Tykoski and Rowe (2004), Sampson and Witmer (2007), Krause et al. (2007), Smith (2007), Carrano and Sampson (2008), Maganuco et al. (2008), Prasad and Sahni (2009), Bell (2010), Paulina Carabajal and Canale (2010), Smith et al. (2010), Novas et al. (2010), Ruiz et al. (2011), Carrano et al. (2012), Paulina Carabajal and Currie (2012), Burch and Carrano (2012), Bell and Coria (2013) and Filippi et al. (2016).

Synonyms
Synonymy list
YearName and author
1896Megalosaurus crenatissimus Depéret pp. 188-191 figs. Pl. 4:4-8
1907Megalosaurus crenatissimus Thevenin p. 15
1908Megalosaurus crenatissimus Fraas p. 117
1925Megalosaurus crenatissimus Depéret and Savornin p. 1110
1926Megalosaurus crenatissimus Huene p. 89
1926Megalosaurus crenatissimus Piveteau p. 34
1927Megalosaurus crenatissimus Huene p. 267
1928Dryptosaurus crenatissimus Depéret and Savornin pp. 262-263
1931Megalosaurus crenatissimus Stromer p. 9
1943Megalosaurus crenatissimus Lapparent p. 11
1955Majungasaurus crenatissimus Lavocat p. 259
1957Majungasaurus crenatissimus Lapparent p. 110
1963Megalosaurus crenatissimus Furon p. 362
1970Majungasaurus crenatissimus Steel p. 33
1976Majungasaurus crenatissimus Russell et al.
1977Majungasaurus crenatissimus Obata and Kanie p. 162
1979Majungatholus atopus Sues and Taquet p. 634 fig. 1
1984Majungasaurus crenatissimus Taquet p. 79
1986Majungatholus atopus Bonaparte p. 91
1990Majungatholus atopus Maryanska p. 566
1991Majungasaurus crenatissimus Bonaparte p. 2
1994Majungasaurus crenatissimus Krause and Dodson p. 32A
1996Majungasaurus crenatissimus Sampson et al.
1997Majungasaurus crenatissimus Currie and Padian p. 369
1997Majungatholus atopus Currie and Padian p. 369
1997Majungasaurus crenatissimus Novas p. 1
1997Majungasaurus crenatissimus Rowe et al. p. 110
1998Majungatholus atopus Sampson et al. p. 1048
1999Majungasaurus crenatissimus Prasad and Sahni p. 382
2002Majungatholus atopus Lamanna et al. p. 58
2003Majungatholus atopus Rauhut p. 33
2003Majungatholus atopus Smith and Krause p. 99A
2004Majungatholus atopus Juárez Valieri and Fiorelli p. 36
2004Majungatholus athopus Martínez et al. p. 578
2004Majungatholus atopus Novas et al. p. 68
2004Majungatholus atopus Tykoski and Rowe p. 49
2004Majungasaurus crenatissimus Tykoski and Rowe p. 50
2006Majungatholus atopus Candeiro et al. p. 935
2006Majungatholus atopus Coria et al. p. 1288
2006Majungatholus atopus Sullivan p. 361
2007Majungasaurus crenatissimus Krause et al. p. 2
2007Majungatholus atopus Malkani
2007Majungasaurus crenatissimus Sampson and Witmer p. 38
2007Majungasaurus crenatissimus Smith p. 105
2008Majungasaurus crenatissimus Carrano and Sampson pp. 195-196
2008Majungasaurus crenatissimus Maganuco et al. pp. 239-240
2009Majungasaurus crenatissimus Prasad and Sahni p. 372
2009Majungatholus atopus Prasad and Sahni p. 372
2010Majungasaurus crenatissimus Bell p. 1263
2010Majungasaurus crenatissimus Novas et al. p. 59
2010Majungasaurus crenatissimus Paulina Carabajal and Canale p. 249
2010Majungasaurus crenatissimus Smith et al. p. 930
2011Majungasaurus crenatissimus Ruiz et al. p. 1271
2012Majungasaurus crenatissimus Burch and Carrano p. 2
2012Majungasaurus crenatissimus Carrano et al. p. 234
2012Majungasaurus crenatissimus Paulina Carabajal and Currie p. 86
2013Majungasaurus crenatissimus Bell and Coria p. 1
2016Majungasaurus crenatissimus Filippi et al. p. 210

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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()
RankNameAuthor
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Theropoda()
Neotheropoda
AverostraPaul 2002
suborderCeratosauria()
superfamilyAbelisauroidea
familyAbelisauridae
subfamilyMajungasaurinae
genusMajungasaurus
speciescrenatissimus()

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
M. T. Carrano and S. D. Sampson 2008Abelisaurid with: (1) thickened, fused, highly pneumatic nasals bearing large, bilateral foramina, (2) thin nasal lamina separating left and right premaxillary nasal processes, (3) maxilla with 17 teeth, (4) frontals with a median hornlike projection and (5) pronounced median fossa on sagittal crest (modified from Sampson et al. 1998; Krause et al. 2007)
M. T. Carrano et al. 2012Abelisaurid with: (1) thickened, fused, highly pneumatic nasals bearing large, bilateral foramina; (2) thin nasal lamina separating left and right premaxillary nasal processes; (3) maxilla with 17 teeth; (4) frontals with median hornlike projection; and (5) pronounced median fossa on sagittal crest (modified from Sampson et al. 1998; Krause et al. 2007; Sampson & Witmer 2007).