Zhuganpo Formation

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Zhuganpo Formation
Stratigraphic range: Upper Ladinian - Lower Carnian
TypeGeological formation
UnderliesXiaowa Formation
OverliesYangliujing Formation
Lithology
Primarylimestone, marl
Location
RegionGuizhou Province, Yunnan Province
CountryChina
ExtentYunnan–Guizhou Plateau

The Zhuganpo Formation is a Triassic geologic unit found in southern China. It has historically been known as the Zhuganpo Member of the Falang Formation. A diverse fossil assemblage known as the Xingyi biota or Xingyi Fauna can be found in the upper part of the Zhuganpo Formation. Fossils of the Xingyi biota include articulated skeletons of marine reptiles, abundant fish, and a plentiful assortment of invertebrates indicating a Ladinian to Carnian age for the sediments of the formation.[1][2]

Paleobiota[edit]

Invertebrates[edit]

Fish[edit]

Reptiles[edit]

Reptiles of the Zhuganpo Formation
Genus Species Notes Images
Anshunsaurus A. huangnihensis[17] An askeptosauroid thalattosaur[18]
Diandongosuchus fuyuanensis
Keichousaurus hui
Guizhouichthyosaurus
A. wushaensis[19] An askeptosauroid thalattosaur[20]
Brevicaudosaurus B. jiyangshanensis A small nothosaur with an unusually short torso and tail[21]
Diandongosuchus[22] D. fuyuanensis A semiaquatic archosauriform, interpreted as a basal phytosaur[23]
Dingxiaosaurus D. luyinensis A pistosauroid of uncertain validity.[24] Previously believed to have been from the Yangliujing Formation.[1]
Fuyuansaurus[25] F. acutirostris A "protorosaur" archosauromorph,[25] possibly a tanystropheid[26][27]
Glyphoderma[28] G. kangi A placochelyid placodont
Guizhouichthyosaurus G. sp.[2][29] A large predatory merriamosaurian ichthyosaur
Keichousaurus K. hui A keichousaurid pachypleurosaur[30][31]
Lariosaurus L. xingyiensis A small nothosaur[32][33]
Litorosuchus[34] L. somnii A semiaquatic archosauriform related to Vancleavea campi
Macrocnemus M. fuyuanensis A small basal tanystropheid[35]
Nothosaurus N. youngi A large nothosaur[36]
Qianichthyosaurus Q. xingyiensis[37] A small toretocnemid ichthyosaur[2]
Qianxisaurus[38] Q. chajiangensis A basal eosauropterygian, possibly related to pachypleurosaurs or nothosaurs
Tanystropheus T. cf. hydroides[39] A large tanystropheid, previously classified as T. cf. longobardicus[40]
T. sp. A small tanystropheid, previously classified as T. cf. longobardicus[40]
Wangosaurus[41] W. brevirostris A pistosauroid
Xinpusaurus X. xingyiensis[42] A thalattosauroid thalattosaur[29]
Yunguisaurus Y. liae A pistosauroid[43][24]

References[edit]

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