Laolonghuozi, Ordos Basin (Cretaceous to of China)

Also known as Laolonghuoze, SCDP

Where: Nei Mongol, China (38.9° N, 108.1° E: paleocoordinates 39.9° N, 110.5° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Luohandong Formation, Valanginian to Valanginian (139.8 - 130.0 Ma)

• mapped as Lower Cretaceous Luohandong Fm. (Zhidan Gp) but authors say sediments more closely resemble the Ejinhoro Fm. Sites in top 2-3 m of strata on butte

•Luohandong Formation is Valanginian—early Hauterivian age based on Li et al. (2019)

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial; red sandstone and gray, green siliciclastic

• "rusty-red strata" within a "grayish green clastic facies"

Size class: macrofossils

Collected by SCDP in 1990

Primary reference: Z.-M. Dong. 1994. The field activities of the Sino-Canadian Dinosaur Project in China, 1987-1990. Canadian Journal of Earth Sciences 30(10-11):1997-2001 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 46931: authorized by Matthew Carrano, entered by Matthew Carrano on 26.01.2005, edited by Jonathan Tennant, David Nicholson and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Pisces
  -
"Pisces indet." = Osteichthyes5
"Pisces indet." = Osteichthyes5 Huxley 1880 bony fish
"fishes"
Actinopteri
 Halecomorphi - Sinamiidae
Reptilia
 Testudines -
Testudines indet.5 Batsch 1788 turtle
aquatic turtle
 Testudines - Sinemydidae
Ordosemys sp.4, Ordosemys leios n. gen. n. sp.2, Sinemys gamera n. sp.3
Ordosemys sp.4 Brinkman and Peng 1993 turtle
IVPP V 12092 an isolated skull, distinct from Ordosemys leios
Ordosemys leios n. gen. n. sp.2 Brinkman and Peng 1993 turtle
Sinemys gamera n. sp.3 Brinkman and Peng 1993 turtle
IVPP V9532-1 to -12
 Saurischia -
 Ornithischia -
Stegosauria indet. ornithischian
 Neornithischia - Psittacosauridae
Psittacosauridae indet.2 Osborn 1923 ornithischian
Psittacosaurus sp.5 Osborn 1923 ornithischian
 Neornithischia - Iguanodontidae
Iguanodontidae indet. Bonaparte 1850 iguanodontid
 Pterosauria -
 Loricata -
Neosuchia indet.6 Clark 1988 crocodilian
IVPP V 10613 - left jugal, left frontal, fused parietals, right exoccipital, incomplete left and right angulars, six vertebrae, both ilia, several osteoderms. Dorsal vertebra representing a second individual.
Shantungosuchus sp.2 Young 1961 crocodilian
 Choristodera -
Ikechosaurus sunailinae1 Sigogneau-Russell 1981 choristodere
 Choristodera - Champsosauridae
Eotomistoma sp.5 Young 1964 champsosaur
Mammalia
  -
Mammalia indet. Linnaeus 1758 mammal