Dzunbain Formation | |
---|---|
Stratigraphic range: | |
Type | Geological formation |
Sub-units |
|
Thickness | up to 60 metres (200 ft) at Chamrin-Us |
Lithology | |
Primary | Claystone and sandstone |
Location | |
Coordinates | 42°27′00″N 102°25′01″E / 42.45°N 102.417°E |
Region | Erdene District, Dornogovi Province, Mongolia |
Country | ![]() |
The Dzunbain Formation (also known as Dzunbayn Formation) is a geological formation in Mongolia, dating to the Early Cretaceous (Aptian-Albian).[1] The formation contains fossils of mammals, reptiles, turtles and dinosaurs. The Dzunbain Formation is equivalent to the Khuren Dukh Formation.[2]
Genus | Species | Location | Stratigraphic position | Material | Notes | Image |
---|---|---|---|---|---|---|
Eodiscoglossus[3] | E. sp.[3] | Khovboor |
Genus | Species | Location | Stratigraphic position | Material | Notes | Image |
---|---|---|---|---|---|---|
Dorsetisaurus[4] | D. sp.[4] | Khovboor | ||||
Hoburogekko[5] | H. suchanovi[5] | Khovboor | "A partial skull."[5] | |||
Hodzhakulia[4] | H. sp.[4] | Khovboor | ||||
Iguania[4] | Indeterminate[4] | Khovboor | ||||
Lacertilia[4] | Indeterminate[4] | Khovboor | ||||
Paramacellodidae[4] | Indeterminate[4] | Khovboor | ||||
Priscagamidae[4] | Indeterminate[4] | Khovboor | ||||
Slavoia[4] | S. sp.[4] | Khovboor | ![]() | |||
Xantusiidae[4] | Indeterminate[4] | Khovboor | ||||
Xenosauridae[4] | Indeterminate[4] | Khovboor |
Genus | Species | Location | Stratigraphic position | Material | Notes | Image |
---|---|---|---|---|---|---|
Arginbaatar[6] | A. dimitrievae[6] | Khovboor | ||||
Arguimus[7] | A. khosbajari[7] | Khovboor | ||||
Eobaatar[8] | E. magnus and E. minor[8] | Khovboor | "Lower jaw fragment (E. magnus)."[8] | |||
Gobiconodon[9] | G. borissiaki and G. hobuvensis[9] | Khovboor | "Both species known only from cranial remains."[9] | ![]() | ||
Gobiotheriodon[10] | G. infinitus[10] | Khovboor | Previously known as "Gobiodon".[10] | |||
Heptoconodon | Indeterminate | Khovboor | ||||
Hovurlestes[11] | H. noyon[11] | Khovboor | ||||
Kielantherium[12] | K. gobiensis[12] | Khovboor | ||||
Monobaatar[8] | M. mimicus[8] | Khovboor | ||||
Prokennolestes[13] | P. minor, P. sp. and P. trofimovi[13] | Khovboor | ||||
Plagiaulacidae[8] | Indeterminate[8] | Khovboor |
Genus | Species | Location | Stratigraphic position | Material | Notes | Image |
---|---|---|---|---|---|---|
Hangaiemys[14] | H. hoburensis[14] | Khovboor | ||||
Mongolemys[14] | M. sp.[14] | Khovboor |
Genus | Species | Location | Stratigraphic position | Material | Notes | Image |
---|---|---|---|---|---|---|
Mongolostegus[15] | M. exspectabilis[15] | Chamrin-Us | "Posterior dorsal and anterior caudal vertebrae as well as pelvic material."[15] | Previously known as Wuerhosaurus mongoliensis.[16] One of the last surviving stegosaurs.[15] | ||
Psittacosauridae[17] | Indeterminate[17] | Chamrin-Us | ||||
Psittacosaurus[18] | P. mongoliensis[18] | Khovboor | ||||
Sauropoda | Indeterminate | Chamrin-Us and Khovboor | ||||
Shamosaurus[2] | S. scutatus[2] | Chamrin-Us and Khovboor | "A complete skull, lower jaws and partial postcranial skeleton with armor. Also referred are a skull piece, lower jaw and two cervical halfrings."[19] | |||
Stegosauridae[15] | Indeterminate[15] | Chamrin-Us | One of the last surviving stegosaurs.[15] | |||
Troodontidae[20] | Indeterminate[20] | Chamrin-Us |