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Hyphalosaurus baitaigouensis

Osteichthyes

Taxonomy
Hyphalosaurus baitaigouensis was named by Ji et al. (2004). Its type specimen is CAGS-IG-03-7-02, a partial skeleton (incomplete skull and partial postcranial skeleton), and it is a 3D body fossil. Its type locality is Baicaigou, Toutai, which is in a Barremian/Aptian lacustrine shale/mudstone in the Yixian Formation of China.

Synonymy list
YearName and author
2004Hyphalosaurus baitaigouensis Ji et al.
2008Hyphalosaurus baitaigouensis Gao and Ksepka p. 758
2010Hyphalosaurus baitaigouensis Hou et al.
2010Hyphalosaurus baitaigouensis Zhou and Wang

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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
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
—Eosuchia()
—Neodiapsida
—SauriaGauthier 1984
—Choristodera()
genusHyphalosaurus
speciesbaitaigouensisJi et al. 2004

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.

†Hyphalosaurus baitaigouensis Ji et al. 2004
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Diagnosis
ReferenceDiagnosis
K. -Q. Gao and D. T. Ksepka 2008Hyphalosaurid choristodere differing from the congeneric species H. lingyuanensis in having the frontal/parietal suture located at the midlevel between the orbit and the supratemporal fenestra; fused postorbitofrontal medially having extensive sutural contact with both the frontal and the parietal; possessing greater elongation of the neck, consisting of 24 cervical vertebrae; 19 dorsal vertebrae; more than 60 caudal vertebrae; deep and horizontal groove developed on the lateral surface of the dorsal vertebral centra; interclavicle rhomboid in shape, lacking a well-developed cross bar; iliac blade vertically oriented
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: planktonicp
Diet: suspension feederp
Created: 2017-04-17 15:16:03
Modified: 2017-04-17 15:16:03
Source: subc = subclass, c = class, subp = subphylum, p = phylum
References: Carroll 1988, Hendy et al. 2009, Kiessling 2004, Bambach et al. 2007

Age range: base of the Late/Upper Barremian to the top of the Early/Lower Aptian or 125.77000 to 119.57000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Late/Upper Barremian - Early/Lower Aptian125.77 - 119.57China (Liaoning) Hyphalosaurus baitaigouensis, Hyphalosaurus sp. (type locality: 67611)