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Heishanobaatar triangulus

Mammalia - Multituberculata - Eobaataridae

Taxonomy
Heishanobaatar triangulus was named by Kusuhashi et al. (2010). Its type specimen is IVPP V14493, a mandible (Left dentary with incisor, p2–p4, and m1), and it is a 3D body fossil. Its type locality is Badaohao coal mine, which is in an Aptian/Albian fluvial-lacustrine mudstone/conglomerate in the Shahai Formation of China. It is the type species of Heishanobaatar.

Synonymy list
YearName and author
2010Heishanobaatar triangulus Kusuhashi et al. p. 1502 figs. 2-6

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
RankNameAuthor
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Allotheria()
orderMultituberculataCope 1884
familyEobaataridae
genusHeishanobaatar
speciestriangulus

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.

†Heishanobaatar triangulus Kusuhashi et al. 2010
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Diagnosis
ReferenceDiagnosis
N. Kusuhashi et al. 2010Moderate-sized eobaatarid multituberculate with lower jaw dental formula 1.0.3.2; lower incisor slender, completely covered with enamel; p2 single-rooted, peg-like; p3 double-rooted, crown shape triangular in lateral view; p4 having eight serrations; m1 cusp formula 2:2; m2 cusp formula 1 (coalesced):2. Differing from other ‘plagiaulacidans’ except for eobaatarids in having three lower premolars rather than four, a peg-like p2, an anteroposteriorly elongated p4 relative to p3, and eight serrations on p4. Differing from Hakusanobaatar, Liaobaatar, and Sinobaatar in having a triangular p3 rather than oval in lateral view. Differing from Eobaatar, Janumys, Liaobaatar, Loxaulax, and Sinobaatar in cusp formula ofm1. Differing from Eobaatar in having a lower incisor completely covered with enamel. Differing from Tedoribaatar in having three lower premolars and a double-rooted p3.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialc
Locomotion: actively mobilec
Life habit: arborealo
Diet: herbivoreo
Created: 2005-09-01 17:42:57
Modified: 2005-09-01 19:42:57
Source: o = order, c = class, subp = subphylum
References: Hopson 1973, Hendy et al. 2009, Carroll 1988, Jenkins and Krause 1983

Age range: base of the Aptian to the top of the Albian or 125.00000 to 100.50000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Aptian - Albian125.0 - 100.5China (Liaoning) Heishanobaatar triangulus (type locality: 36971 123517)