Contents

Nanxiong Formation

Geological formation in China

Nanxiong Formation
Stratigraphic range: Maastrichtian 66.7 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Underlies	Shanghu Formation
Overlies	Jurassic granite basement, Changba Formation (Nanxiong Group)
Thickness	~300 m (980 ft) Several kilometers (Nanxiong Group)
Lithology
Primary	Sandstone, siltstone, mudstone
Other	Limestone, conglomerate
Location
Coordinates	23°30′N 114°54′E / 23.5°N 114.9°E / 23.5; 114.9
Approximate paleocoordinates	23°48′N 110°30′E / 23.8°N 110.5°E / 23.8; 110.5
Region	Guangdong Province
Country	China
Extent	Nanxiong Basin
Nanxiong Formation (China) Show map of China Nanxiong Formation (Guangdong) Show map of Guangdong

The Nanxiong Formation (also known as Yuanpu Formation) is a Late Cretaceous geologic formationinGuangdong Province. Dinosaur remains are among the fossils that have been recovered from the formation.

It consists of continental siliciclastic red beds, with fauna which similar to that of the Nemegt Formation. It has been dated about 66.7 ± 0.3 million years ago.^[1] It is the lowest unit of the Nanxiong Basin, a small graben created during Mesozoic rifting.^[2] Buck et al. state that it overlies Jurassic granite basement, and is conformably overlain by the Shanghu Formation.^[1] Alternative stratigraphic schemes for the Nanxiong basin have been proposed,^[3] one of which refers to the Nanxiong succession as the Nanxiong Group, and dividing it into the Yuanfu, Zhutian and Zhenshui formations, and overlying the AlbiantoTuronian Changba Formation.^[4]

Lizards
Genus	Species	Material	Notes	Images
Chianghsia[6]	C. nankangensis	A partial skull and lower jaws	Amonstersaurian lizard
Tianyusaurus[7]	T. zhengi	A skull, mandible, first eight cervical vertebrae and nearly complete pectoral girdles	Apolyglyphanodontian lizard, also known from the Qiupa Formation

Turtles
Genus	Species	Material	Notes	Images
Jiangxichelys[8]	J. ganzhouensis	A complete shell	Ananhsiungchelyid turtle
Nanhsiungchelys[9]	N. wuchingensis	A partial skeleton	Ananhsiungchelyid turtle[10]
Oolithes[11][10]	O. elongatus, O. nanhsiungensis, O. rugustus and O. spheroides.	Egg and egg clutches. Some of these were probably laid by Nanhsiungchelys.[11][10]	Turtle and/or theropod eggs.

Oviraptorosaurs
Genus	Species	Material	Notes	Images
Banji[13]	B. long	Nearly complete skull and lower jaw	Anoviraptorid
Corythoraptor[14]	C. jacobsi	Nearly complete skeleton including the skull and lower jaw	Anoviraptorid with a distinct cassowary-like crest
Elongatoolithidae indet.	Indeterminate	Three eggs with embryonic remains.[15]	Oviraptorid eggs.
Ganzhousaurus[16]	G. nankangensis	Lower jaw, leg bone, hip bone and caudal vertebrae	A transitional oviraptorid with both basal and derived traits
Huanansaurus[17]	H. ganzhouensis	Nearly complete skull, lower jaws, neck vertebrae, a humerus, arm fragments, lower part of the right thighbone, the upper part of the right shinbone, and parts of the right foot	Anoviraptorid
Jiangxisaurus[18]	J. ganzhouensis	Incomplete skull, lower jaw, vertebrae, nearly complete pectoral girdle, the left forelimb, ribs, and a partially preserved pelvic girdle	Anoviraptorid
Macroolithus	Indeterminate	Five egg clutches containing over 60 eggs.[19]	Oviraptorid eggs
	Indeterminate	Three eggs with embryonic remains.[20]	Oviraptorid eggs
	M. yaotunensis	Two eggs with embryonic remains.[21]	Oviraptorid eggs. Skeletal proportions resemble Heyuannia huangi
	M. yaotunensis	A nest of 24 eggs associated with an adult oviraptorid.[22]	Oviraptorid eggs
Nankangia[23]	N. jiangxiensis	A partial lower jaw, vertebrae, both scapulocoracoids, a nearly complete right humerus, pubic bones, and some dorsal ribs	Anoviraptorid
Oviraptoridae indet.	Indeterminate	A female individual preserving the pelvic girdle, some caudals and two eggs inside the abdominal cavity.[24]	A pregnant oviraptorid
	Indeterminate	A nesting adult over a nest of eggs, preserving cervical vertebrae, arms and the pelvic region.[22]	Anoviraptorid that represents the fifth nesting taxon.
	Indeterminate	A female individual preserving a partial pelvic girdle, hindlimbs and some caudals with two eggs associated near the pelvic region.[25]	A pregnant oviraptorid.
Shixinggia[26]	S. oblita	Sparse postcranial remains lacking the skull	Anoviraptorid
Tongtianlong[27]	T. limosus	Almost complete skeleton, portions of the arms, right leg, and tail were destroyed by TNT blasts	Anoviraptorid, the pose indicates that it may have died trying to free itself from mud

Therizinosaurids
Genus	Species	Material	Notes	Images
Nanshiungosaurus	N. brevispinus	Eleven cervical vertebrae, ten dorsal vertebrae, six sacral vertebrae and the pelvis.[11][30]	Atherizinosaurid.

Tyrannosaurids
Genus	Species	Material	Notes	Images
Qianzhousaurus[31]	Q. sinensis	A skull, lower jaw, vertebrae, both scapulocoracoids, a left femur and a left tibia	Atyrannosaurid, could represent a third species of Alioramus[32]
Tyrannosauridae indet.	Indeterminate	Two isolated teeth.[11]	Atyrannosaurid.
	Indeterminate	Large and well-preserved tooth.[12]	Atyrannosaurid.

• List of dinosaur-bearing rock formations
• Dalangshan Formation