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Acyon myctoderos

Osteichthyes - Sparassodonta

Taxonomy
Acyon myctoderos was named by Forasiepi et al. (2006). Its type specimen is MNHN-Bol-V-003668, a skull (skull with associated lower jaws and post crania), and it is a 3D body fossil. Its type locality is Quebrada Honda, which is in a Laventan fluvial claystone/siliciclastic in Bolivia.

Synonymy list
YearName and author
2006Acyon myctoderos Forasiepi et al. pp. 671-680 figs. 2-9

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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
orderSparassodonta()
subfamilyHathlyacininae()
genusAcyonAmeghino 1887
speciesmyctoderos

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.

Acyon myctoderos Forasiepi et al. 2006
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Diagnosis
ReferenceDiagnosis
A. M. Forasiepi et al. 2006Largest species of the genus (A. myctoderos ap- proximately 5% larger than A. tricuspidatus, based on measure- ments of the dentition; Table 1; Marshall, 1981:Table 25) and largest know hathliacynid; differs from A. tricuspidatus (Cabrera, 1927:fig. 6) in having longer diastemata among premolars; p2 comparatively more robust and with a better-developed poste- rior cusp; less-developed anterobasal cingulum on lower molars; hypoconulid less salient posteriorly and more vertically oriented on m1–m3; hypoconids larger, at least on m2.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubo
Locomotion: actively mobilec
Life habit: scansorialsubc
Diet: carnivoresubo
Reproduction: viviparoussubc
Created: 2013-05-24 23:51:13
Modified: 2013-05-24 08:51:13
Source: subo = suborder, subc = subclass, c = class, subp = subphylum
References: Goin 1997, Clemens 1979, Hendy et al. 2009, Carroll 1988, Lillegraven 1979

Age range: Laventan or 13.80000 to 11.00000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Laventan13.8 - 11.0Bolivia (Tarija) Acyon myctoderos (type locality: 38071)