PBDB Taxon

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

Uhangrichnus chuni

Reptilia

Taxonomy

Uhangrichnus chuni was named by Yang et al. (1995). Its type specimen is KPE 50101, mold and plaster replicas in the Kyungpook National University, Earth and is a trace fossil. Its type locality is Avian tracksite, near Haenam, which is in a Campanian lacustrine siliciclastic in the Uhangri Formation of South Korea.

Synonyms

Dongyangornipes sinensis was named by Azuma et al. (2013). It is considered to be a form taxon. Its type specimen is ZMNH-M8774, a footprint, and it is a trace fossil. Its type locality is Fengchekou Mountain bird tracksite, which is in a Cenomanian terrestrial siltstone in the Jinhua Formation of China.

It was synonymized subjectively with Uhangrichnus chuni by Buckley et al. (2016), Xing et al. (2017) and Xing et al. (2018).

Synonymy list

Year	Name and author
1995	Uhangrichnus chuni Yang et al. pp. 22-26 figs. 3, 5
1998	Uhangrichnus chuni Lockley and Matsukawa p. 139
2004	Uhangrichnus chuni Huh and Hwang p. 324
2011	Uhangrichnus chuni Fiorillo et al. p. 42
2012	Uhangrichnus chuni Kim et al. p. 34
2013	Dongyangornipes sinensis Azuma et al. p. 4
2016	Uhangrichnus chuni Buckley et al. p. 262
2017	Uhangrichnus chuni Xing et al. p. 2312
2018	Dongyangornipes sinensis Imai et al. p. 6
2018	Uhangrichnus chuni Xing et al. p. 8

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

Rank	Name	Author
—	Diapsida	()
—	Archosauromorpha	(Huene 1946)
—	Crocopoda
—	Archosauriformes	Gauthier 1986
—	Eucrocopoda
—	Archosauria	()
informal	Avemetatarsalia
—	Ornithodira
—	Dinosauromorpha
—	Dinosauriformes
—	Dinosauria	()
—	Theropoda	()
—	Neotheropoda
—	Averostra	Paul 2002
—	Tetanurae
—	Coelurosauria	()
—	Maniraptora
—	Paraves
class	Aves
genus	Uhangrichnus
species	chuni

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.

†Uhangrichnus chuni Yang et al. 1995

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Invalid names: Dongyangornipes sinensis Azuma et al. 2013 [synonym]

Diagnosis

Reference	Diagnosis
A. R. Fiorillo et al. 2011	Tridactyl tracks showing webbing between digits. Digits II and IV curve medially.
Y. Azuma et al. 2013 (Dongyangornipes sinensis)	Relatively small tridactyl footprints with well- developed web structures. The length and width of the footprints are approximately 35 and 40mm respectively; the lengthewidth ratio is 0.87. The total divarication (between digits II and IV) is nearly 100; the divarication angle between digits II and III is slightly smaller than that between digits III and IV. The web impression between digits II and III joins the apex of digit II and the distal third of digit III, and the impression between digits III and IV is linked from the apex of digit IV to the middle of digit III.

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:

carnivoresubo

Reproduction:

oviparouso

Dispersal:

direct/internalo

Dispersal 2:

mobileo

Created:

2009-01-03 20:39:15

Modified:

2009-01-03 22:39:15

Source: subo = suborder, o = order

References: Benton 1983, Marsh 1875

Age range: base of the Albian to the top of the Campanian or 113.00000 to 72.10000 Ma

Collections (5 total)

Time interval	Ma	Country or state	Original ID and collection number
Albian	113.0 - 100.5	South Korea (Gyeongsangnam-do)	Uhangrichnus chuni (52722)
Cenomanian	100.5 - 93.9	China (Zhejiang)	Aves indet. (101072) Dongyangornipes sinensis (219892)
Campanian	83.6 - 72.1	South Korea (Cholla-namdo)	Uhangrichnus chuni (type locality: 60589)
Late/Upper Campanian - Early/Lower Maastrichtian	83.5 - 66.0	USA (Alaska)	Uhangrichnus chuni (201861)