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Amtaaguar

Chondrichthyes - Myliobatiformes - Myliobatidae

Synonymy list
YearName and author
2025Amtaaguar De Pasqua et al. p. 523

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classChondrichthyes
RankNameAuthor
infraclassElasmobranchii(Bonaparte 1838)
—Euselachii()
—NeoselachiiCompagno 1977
superorderBatomorphii
orderMyliobatiformesCompagno 1973
suborderMyliobatoideiCompagno 1973
familyMyliobatidaeBonaparte 1838
genusAmtaaguar

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.

G. †Amtaaguar De Pasqua et al. 2025
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†Amtaaguar crassus Gervais 1852
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Invalid names: Myliobatis magister Leidy 1876 [synonym]
Diagnosis
ReferenceDiagnosis
J. J. De Pasqua et al. 2025Myliobatidae known only from dental plates, characterisable on
the basis of the following combination of characters (synapomorphies
marked with an asterisk): 1) proportionally thick and large
dental plates; 2) presence of a labio-lingually extended medial
depression resulting in a ‘lip’ shaped plate in labial/lingual
views*; 3) medial teeth slightly curved and ‘M’- shaped; 4) presence
of a longitudinal median groove* and; 5) ridges or undulations
on occlusal surface.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: marinesubp
Locomotion: actively mobileo
Life habit: nektobenthico
Diet: carnivoreo
Created: 2009-07-21 07:05:51
Modified: 2009-07-21 09:05:51
Source: o = order, subp = subphylum
References: Wagner 2023, Carroll 1988, Hendy et al. 2009

Age range: base of the Thanetian to the top of the Messinian or 59.24000 to 5.33300 Ma

Collections (6 total)


Time interval Ma Country or state Original ID and collection number
Thanetian59.24 - 56.0USA (New Jersey) Myliobatis magister (3113)
Early/Lower Miocene - Middle Miocene23.04 - 11.63Argentina (Río Negro) A. crassus (211706)
Miocene23.04 - 5.333USA (South Carolina) Myliobatis magister (18506)
MN 5 - MN 615.98 - 12.75Portugal Myliobatis crassus (65912)
Late/Upper Miocene11.63 - 5.333Portugal Myliobatis crassus (56459)
Messinian7.246 - 5.333Algeria Myliobatis crassus (186631)