PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Pengxianpus

Osteichthyes - Grallatoridae

Taxonomy

Pengxianpus was named by Yang and Yang (1987). It is considered to be a form taxon.

It was assigned to Prosauropoda by Yang and Yang (1987); to Carnosauria by Wang et al. (2016); and to Grallatoridae by Klein and Lucas (2021).

Species

P. cifengensis, P. yulinensis

Synonymy list

Year	Name and author
1987	Pengxianpus Yang and Yang p. 7
2016	Pengxianpus Wang et al. p. 10
2021	Pengxianpus Klein and Lucas p. 13

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
class	Osteichthyes
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
—	Sauropsida

Rank	Name	Author
class	Reptilia
subclass	Eureptilia	()
—	Romeriida
—	Diapsida	()
—	Archosauromorpha	(Huene 1946)
—	Crocopoda
—	Archosauriformes	Gauthier 1986
—	Eucrocopoda
—	Archosauria	()
informal	Avemetatarsalia
—	Ornithodira
—	Dinosauromorpha
—	Dinosauriformes
—	Dinosauria	()
—	Saurischia	()
—	Theropoda	()
family	Grallatoridae
genus	Pengxianpus

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. †Pengxianpus Yang and Yang 1987

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†Pengxianpus cifengensis Yang and Yang 1987

†Pengxianpus yulinensis Wang et al. 2016

Diagnosis

Reference	Diagnosis
B. Wang et al. 2016	Emended diagnosis by Xing et al., (2013): Large (>25 cm length), tridactyl, mesaxonic pes imprints of a biped showing a wide digit divarication angle II-IV (up to 69°). Digits of long and slender shape with rounded pads, digit III the longest, followed by II and IV. The metatarsal- phalangeal pad on digit IV is small, but pronounced circular in shape.
H. Klein and S. G. Lucas 2021	Large (>25 cm length), tridactyl, mesaxonic pes imprints of a biped showing a wide digit II-IV divarication angle (up to 69°). Digits of long and slender shape with rounded pads, digit III the longest, followed by II and IV. Small, but pronounced circular metatarsal-phalangeal pad on digit IV.

Measurements

No measurements are available

Composition:

hydroxyapatiteo

Entire body:

yeso

Adult length:

10 to < 100o

Adult width:

1.0 to < 10o

Adult height:

1.0 to < 10o

Architecture:

compact or denseo

Ontogeny:

accretion, modification of partso

Grouping:

solitaryo

Environment:

terrestrialo

Locomotion:

actively mobileo

Life habit:

ground dwellingo

Diet:

carnivoreo

Reproduction:

oviparouso

Dispersal:

direct/internalo

Dispersal 2:

mobileo

Created:

2004-12-14 12:50:08

Modified:

2004-12-14 14:50:08

Source: o = order

References: Marsh 1875, Kiessling 2004

Age range: base of the Norian to the top of the Early/Lower Jurassic or 227.30000 to 174.70000 Ma

Collections (3 total)

Time interval	Ma	Country or state	Original ID and collection number
Norian	227.3 - 205.7	China (Sichuan)	P. sp. (224337)
Rhaetian	205.7 - 201.4	China (Sichuan)	Dinosauria indet. (60501)
Early/Lower Jurassic	201.4 - 174.7	China (Shaanxi)	P. yulinensis (224366)