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Groebertherium stipanicici

Osteichthyes - Dryolestidae

Taxonomy
Groebertherium stipanicici was named by Bonaparte (1986). Its type specimen is MACN-RN 13, a tooth (left upper molar), and it is a 3D body fossil. Its type locality is Los Alamitos vertebrates, middle section, which is in a Campanian/Maastrichtian lacustrine - large siltstone/sandstone in the Los Alamitos Formation of Argentina. It is the type species of Groebertherium.

Synonymy list
YearName and author
1986Groebertherium stipanicici Bonaparte p. 51
1990Groebertherium stipanicici Bonaparte p. 79
2004Groebertherium stipanicici Kielan-Jaworowska et al. pp. 380, 384
2009Groebertherium stipanicici Rougier et al. p. 228

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
RankNameAuthor
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
subclassSynapsida
Therapsida()
infraorderCynodontia()
Mammaliamorpha
Mammaliaformes
classMammalia
Cladotheria
Dryolestoidea(Butler 1939)
familyDryolestidaeMarsh 1879
genusGroebertherium
speciesstipanicici

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.

Groebertherium stipanicici Bonaparte 1986
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Diagnosis
ReferenceDiagnosis
G. W. Rougier et al. 2009Measurements. MML- Pv 10 (Lm
¼ 4.05 mm; Wm ¼ 5.29 mm);
MML-Pv 11 (Lm
¼ 4.05 mm; Wm ¼ 5.62 mm); MML-Pv 12 too
fragmentary for meaningful measurements.
Groebertherium stipanicici is a small-sized dryolestoid, with a stylocone divorced from the paracrista and a long, narrow trigon. The molars have a tall crown, they are approximately symmetrical and devoid of cingula. The parastyle forms a small hook. A centrocrista is poorly defined and, if at all present, represented by the thick lingual extension of the lingual slope of the stylocone.