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Maastrichtidelphys meurismeti

Osteichthyes

Taxonomy
Maastrichtidelphys meurismeti was named by Martin et al. (2005). Its type specimen is NHMM2002 063, a tooth (Right M2), and it is a 3D body fossil. Its type locality is ENCI-Maastricht B.V. quarry, Valkenburg Member, which is in a Maastrichtian carbonate horizon in the Maastricht Formation of the Netherlands. It is the type species of Maastrichtidelphys.

Synonymy list
YearName and author
2005Maastrichtidelphys meurismeti Martin et al. p. 497

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
RankNameAuthor
subclassSynapsida
Therapsida()
infraorderCynodontia()
Mammaliamorpha
Mammaliaformes
classMammalia
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
subclassMetatheria()
Marsupialiformes
Marsupialia()
Peradectidae(Crochet 1979)
genusMaastrichtidelphys
speciesmeurismeti

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.

Maastrichtidelphys meurismeti Martin et al. 2005
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Diagnosis
ReferenceDiagnosis
J. E. Martin et al. 2005Smallest known didelphoid, characterized by labiolingually compressed stylar cusps, significant reduction of stylar cusp B, marginal position of stylar cusp C, stylar cusp C is the largest stylar cusp, reduction of the size of conules and absence or extreme reduction of internal “wings” on para- and metaconules, invasive V shaped centrocrista with the apex capped by an arcuate conule or ridge.