Zhuganpo Formation

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Zhuganpo Formation
Stratigraphic range: Upper Ladinian - Lower Carnian
Type Geological formation
Underlies Xiaowa Formation
Overlies Yangliujing Formation
Lithology
Primary limestone, marl
Location
Region Guizhou Province, Yunnan Province
Country China
Extent Yunnan–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]

Contents

Paleobiota

Invertebrates

Fish

Reptiles

Reptiles of the Zhuganpo Formation
GenusSpeciesNotesImages
Anshunsaurus A. huangnihensis [17] An askeptosauroid thalattosaur [18]
Diandongosuchus fuyuanensis Diandongosuchus fuyuanensis.jpg
Diandongosuchus fuyuanensis
Keichousaurus hui Keichousaurus NT small.jpg
Keichousaurus hui
Guizhouichthyosaurus Guizhouichthyosaurus SW.png
Guizhouichthyosaurus
A. wushaensis [19] An askeptosauroid thalattosaur [20]
Brevicaudosaurus B. jiyangshanensisA small nothosaur with an unusually short torso and tail [21]
Diandongosuchus [22] D. fuyuanensisA semiaquatic archosauriform, interpreted as a basal phytosaur [23]
Dingxiaosaurus D. luyinensisA pistosauroid of uncertain validity. [24] Previously believed to have been from the Yangliujing Formation. [1]
Fuyuansaurus [25] F. acutirostrisA "protorosaur" archosauromorph, [25] possibly a tanystropheid [26] [27]
Glyphoderma [28] G. kangiA placochelyid placodont
Guizhouichthyosaurus G. sp. [2] [29] A large predatory merriamosaurian ichthyosaur
Keichousaurus K. huiA keichousaurid pachypleurosaur [30] [31]
Lariosaurus L. xingyiensisA small nothosaur [32] [33]
Litorosuchus [34] L. somniiA semiaquatic archosauriform related to Vancleavea campi
Macrocnemus M. fuyuanensisA small basal tanystropheid [35]
Nothosaurus N. youngiA large nothosaur [36]
Qianichthyosaurus Q. xingyiensis [37] A small toretocnemid ichthyosaur [2]
Qianxisaurus [38] Q. chajiangensisA 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. brevirostrisA pistosauroid
Xinpusaurus X. xingyiensis [42] A thalattosauroid thalattosaur [29]
Yunguisaurus Y. liaeA pistosauroid [43] [24]

References

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