The Meng-Yin or Mengyin Formation (simplified Chinese: 蒙阴组; traditional Chinese: 蒙陰組; pinyin: Méngyīn Zǔ) is a geological formation in Shandong, China, whose strata date back to the Berriasian and Valanginian stages of the Early Cretaceous.[1][2]

Meng-Yin Formation
Stratigraphic range: Berriasian-Valanginian
~145–133 Ma
TypeGeological formation
Lithology
PrimarySandstone
OtherSiltstone
Location
Coordinates35°54′N 118°00′E / 35.9°N 118.0°E / 35.9; 118.0
Approximate paleocoordinates36°54′N 120°12′E / 36.9°N 120.2°E / 36.9; 120.2
RegionShandong
Country China
Meng-Yin Formation is located in China
Meng-Yin Formation
Meng-Yin Formation (China)
Meng-Yin Formation is located in Shandong
Meng-Yin Formation
Meng-Yin Formation (Shandong)

Dinosaur remains are among the fossils that have been recovered from the formation.[3] The type material for the titanosauriform dinosaur Euhelopus was excavated at this formation by Otto Zdansky in 1923, in green/yellow sandstone and green/yellow siltstone that were deposited during the Barremian or Aptian stages of the Cretaceous period, approximately 129 to 113 million years ago.[4]

Both the genus and species of Mengyinaia mengyinensis were named after the formation.

Vertebrate paleofauna

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Indeterminate stegosaurid remains have been found in Shandong, China.[3]

Vertebrates from the Meng-Yin Formation
Genus Species Location Stratigraphic position Material Notes Images
Euhelopus[3] E. zdanskyi[3] Shandong[3] "Skull and partial postcranial skeleton, additional fragmentary skeleton."[5]
 
Mengshanosaurus M. minimus A single juvenile skull A choristodere belonging to Neochoristodera

Other fossils

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Fish
Reptiles

See also

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References

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  1. ^ Mengyin Formation at Fossilworks.org
  2. ^ Wilson & Upchurch, 2009
  3. ^ a b c d e Weishampel et al., 2004, "Dinosaur distribution (Late Jurassic, Asia).", pp.550–552
  4. ^ T'an, 1923
  5. ^ "Table 13.1," in Weishampel et al., 2004, p.262
  6. ^ Fang et al., 2009
  7. ^ XU, GUANG-HUI; CHANG, MEE-MANN (2009). "Redescription of †Paralycoptera wuiChang & Chou, 1977 (Teleostei: Osteoglossoidei) from the Early Cretaceous of eastern China". Zoological Journal of the Linnean Society. 157 (1): 83–106. doi:10.1111/j.1096-3642.2009.00532.x. ISSN 0024-4082.
  8. ^ Young, 1961

Bibliography

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